Finding the Fourth Proportional to 1,402.80, 1,936.35 and 962.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.80 : 1,936.35 = 962.16 : x
2. Step 2: Convert to fraction form
   1,402.80/1,936.35 = 962.16/x
3. Step 3: Cross multiply
   1,402.80x = 1,936.35 × 962.16
4. Step 4: Simplify right side
   1,402.80x = 1,863,078.52
5. Step 5: Solve for x
   x = 1,863,078.52/1,402.80
6. Step 6: Final answer
   x = 1,328.11