Finding the Fourth Proportional to 1,356.46, 1,869.24 and 962.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.46 : 1,869.24 = 962.80 : x
2. Step 2: Convert to fraction form
   1,356.46/1,869.24 = 962.80/x
3. Step 3: Cross multiply
   1,356.46x = 1,869.24 × 962.80
4. Step 4: Simplify right side
   1,356.46x = 1,799,704.27
5. Step 5: Solve for x
   x = 1,799,704.27/1,356.46
6. Step 6: Final answer
   x = 1,326.77