Suppose that an office space commands $200,000 of rental per year, to be paid at the start

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Question:

Suppose that an office space commands $200,000 of rental per year, to be paid at the start of the year. Suppose you enter into a forward contract with maturity date in three years, and whose underlying asset is this office space. If the value of this office space today is $1,200,000, and the risk-free interest rate is effective at 4%, calculate the forward price using the no arbitrage principle.