Finding the Fourth Proportional to 3,614.01, 5,420.54 and 981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,614.01 : 5,420.54 = 981.72 : x
2. Step 2: Convert to fraction form
   3,614.01/5,420.54 = 981.72/x
3. Step 3: Cross multiply
   3,614.01x = 5,420.54 × 981.72
4. Step 4: Simplify right side
   3,614.01x = 5,321,447.62
5. Step 5: Solve for x
   x = 5,321,447.62/3,614.01
6. Step 6: Final answer
   x = 1,472.45