The engineer of problem 4 now wants to consider an aluminum tank as well as the steel and fiberglass tank. The steel tank costs $235,000 and is expected to last 15 years. The aluminum tank is expected to last 25 years. The fiberglass tank costs $306,000 and is expected to last 30 years. None of the tanks has a salvage value at the end of its useful life. At a MARR of 8%, determine the highest cost for the aluminum tank for which it will be the preferred option. Express your answer in $ to the nearest $1,000.