You are given: i) the present value of an annuity due that pays 250 every 3 months during the first 12 years and 100 every 3 months during the second 12 years is 5500; ii) The present value of a 12 year deferred annuity due that pays 290 every 3 months for 12 years is 1298; and iii) The present value of an annuity due that pays 90 every 3 months during the first 12 years and 180 every 3 months during the next 12 years is X. The same interest rate is used in all calculations. Determine X.