I think it is about spot rate and forward rate

3. (8 points) Current spot rate curve is given in the table below. Assume annual compounding. Keep at least 4 decimal points in your calculation. A 4-year bond with 5% coupon rate pays coupon annually. Face value is 1000 . An investor takes a long position in the 2-year forward contract on this bond. One year later, suppose the spot rate curve stays the same, what is the market value of the long forward position