Finding the Fourth Proportional to 1,433.97, 1,978.61 and 962.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.97 : 1,978.61 = 962.55 : x
2. Step 2: Convert to fraction form
   1,433.97/1,978.61 = 962.55/x
3. Step 3: Cross multiply
   1,433.97x = 1,978.61 × 962.55
4. Step 4: Simplify right side
   1,433.97x = 1,904,503.57
5. Step 5: Solve for x
   x = 1,904,503.57/1,433.97
6. Step 6: Final answer
   x = 1,328.14