what do you need it for? how exact does it have to be?
if you have the statement from 4 years ago, take the ending balance times the interest rate and THAT will be quite close to the interest from 3 years ago. it will be SLIGHTLY high.
If you have the statement from 2 years ago, take the beginning balance times the interest rate and THAT will be quite close to the interest from 3 years ago. it will be SLIGHTLY low.
I am assuming you have a fixed rate loan.
