7.As indicated previously, Throx orders its product from the Chinese sock manufacturer Zhejiang Datang Hosiery Group Co., Ltd. In so-called "Sock City." The table below provides examples of sample forecast and booked order information that are similar to what the manufacturer may use to manage its production activity over four successive times periods. Also included for the first three of the four time periods indicated are the planned figures for MPS (master production schedule).

PeriodPeriod 1Period 2Period 3Period 4 Forecasted Demand2,2502,1001,9001,750 Booked Orders 2,5601,9209601,600 Projected ending inventory 0 Master production schedule 2,4001,8002,150?

a.Assuming a beginning inventory of 800 sock sets, what is the master production schedule quantity for period 4 if the manufacturer wants to end period 4 with 0 inventory sock sets?