On January $1$ of the current year, Southwest Inc. adopts a plan to accumulate funds for environmental improvements to occur $4\mathrm{.}5$ years in the future, at an estimated cost of $$1,000,000.$ Southwest plans to make four equal annual deposits in a fund that earns interest at $10\%$ compounded annually. The first deposit is made on July $1$ of the current year. Compute the amount of the annual deposit.