Finding the Fourth Proportional to 1,401.30, 1,932.66 and 981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.30 : 1,932.66 = 981.72 : x
2. Step 2: Convert to fraction form
   1,401.30/1,932.66 = 981.72/x
3. Step 3: Cross multiply
   1,401.30x = 1,932.66 × 981.72
4. Step 4: Simplify right side
   1,401.30x = 1,897,330.98
5. Step 5: Solve for x
   x = 1,897,330.98/1,401.30
6. Step 6: Final answer
   x = 1,353.98