Finding the Fourth Proportional to 1,402.18, 1,932.96 and 981.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.18 : 1,932.96 = 981.25 : x
2. Step 2: Convert to fraction form
   1,402.18/1,932.96 = 981.25/x
3. Step 3: Cross multiply
   1,402.18x = 1,932.96 × 981.25
4. Step 4: Simplify right side
   1,402.18x = 1,896,715.85
5. Step 5: Solve for x
   x = 1,896,715.85/1,402.18
6. Step 6: Final answer
   x = 1,352.69