Finding the Fourth Proportional to 981.83, 1,354.83 and 539.62

Step by Step Solution

1. Step 1: Write the proportion equation
   981.83 : 1,354.83 = 539.62 : x
2. Step 2: Convert to fraction form
   981.83/1,354.83 = 539.62/x
3. Step 3: Cross multiply
   981.83x = 1,354.83 × 539.62
4. Step 4: Simplify right side
   981.83x = 731,086.59
5. Step 5: Solve for x
   x = 731,086.59/981.83
6. Step 6: Final answer
   x = 744.62