Linus has just won the "Wait To Spend" lottery. Specifically Linus has won the lump sum amount of S1400 but he must wait until the end of 3 years to receive the money. Linus is in need of cash and would rather receive a different pattern of payments: $325 today and then receive some unknown lump sum amount that will he received in 3 years. Using an interest rate of 2.50%, determine the unknown lump sum amount that would make the present value of both prizes equivalent.