A project is determined to have a useful life of 12 years. 550,000 is invested immediately. At the end of 8 years, X will need to be invested to respond to market conditions. The project is expected to produce returns of 100,000 at the end of each year for 8 years and 150,000 at the end of year for the final four years. If the project is expected to produce and internal rate of return of 10%, Determine X