Do you have some fabric that would go with what you have for backing and make a border on the backing that would wrap around the front for a binding?

I'm thinking if you are lacking 2 inches ( that would be one inch on each side + the 1/4 inch seam...making it 1-1/4 in. to get to the edge on each side), then if you had something to make a 3 inch strip to go all the way around........that would give you 1/4 inch to make up for the seam on the backing...1 inch to get to the edge on the back ( on each side )....that would give you 1-1/2 inches to play with for the hem on the front.

If you having a strip of anything to practice on, just sew it by hand for a short distance and wrap it to the fornt to see if it will work. Wish I could be there to help you, because I may not be clear with my instructions.

It could add some interest to the quilt. Please let me know.

If you don't have a strip that's long enough by itself, you could piece a border if you have any scraps left from the quilt.

I guess I should have asked how wide is the quilt top?

This may contain your answer. See the section entitled The Story of the Diagonal Seamed Back. It worked for me and it was a beautiful marriage of math and quilting:

http://www.flynnquilt.com/freepattern.html

Good Luck!

If you have enough length to spare in the piece of backing fabric, you can cut the whole piece from top corner to opposite bottom corner on a diagonal. Obviously, accuracy is required! Then you can slide the pieces, one up and one down, until you have the backing width you need. At this point, you sew the cut pieces back together. You will then have two small triangles to cut off, one on top and one on the bottom, to square up your backing. If you are only lacking 2 inches, your triangles to be cut off should be small. Weezie

Can you add a border to the back to make it come out even? If you had some ore fabric that would go with the existing colors that would be one option.