2. The internal rate of return method is used to analyze an $946,250 capital investment proposal with annual net cash flows of $250,000 for each of the 6 years of its useful life (4 points). a. Determine a present value factor for an annuity of $1 that can be used in determining the internal rate of return. b. Based on the factor determined in (a) and the portion of the present value of an annuity of $1 table presented below, determine the internal rate of return for the proposal. Year 10% 1234567 15% 20% 0.909 0.870 0.833 1.736 1.626 1.528 2.487 2.283 2.106 4 3.170 2.855 2.589 3.791 3.353 2.991 4.355 3.785 3.326 7 4.868 4.160 3.605