-$3,080.
Using the CF function of your financial calculator, input the initial investment as a cash outflow (negative) of $11,400, then each of the cash inflows (positive) as $2,250 for each of the first 5 years and $1,500 for the sixth year. Hit the NPV button and input the required rate of return as 14.4% then the NPV will be -$3,080.