Final answer:
The forecast for Brand 4, which accounts for 8.7% of the total sales, with total sales at 1,200 units, is 104.4 units.
Step-by-step explanation:
To determine the forecast for Brand 4, which represents 8.7% of the total sales, and given that the total sales are 1,200, we need to calculate 8.7% of 1,200. This can be done by multiplying the total sales by the percentage:
Forecast for Brand 4 = Total Sales × Percentage of Brand 4
Forecast for Brand 4 = 1,200 × 0.087
Now, perform the multiplication to get the result:
Forecast for Brand 4 = 104.4
Therefore, the forecast sales figure for Brand 4 is 104.4 units.