Finding the Fourth Proportional to 1,402.52, 1,935.42 and 781.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.52 : 1,935.42 = 781.48 : x
2. Step 2: Convert to fraction form
   1,402.52/1,935.42 = 781.48/x
3. Step 3: Cross multiply
   1,402.52x = 1,935.42 × 781.48
4. Step 4: Simplify right side
   1,402.52x = 1,512,492.02
5. Step 5: Solve for x
   x = 1,512,492.02/1,402.52
6. Step 6: Final answer
   x = 1,078.41