Suppose a four period weighted average is being used to forecast demand. Weights for the periods are: wt-4 = 0.1 wt-3 = 0.2 wt-2 = 0.3 wt-1 = 0.4 Demand observed in the previous four periods was: At-4 = 268 At-3 = 426 At-2 = 291 At-1 = 363 What will be the demand forecast for period t? (Keep one decimal place in your answer).