Finding the Fourth Proportional to 3,558.43, 5,337.69 and 961.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.43 : 5,337.69 = 961.42 : x
2. Step 2: Convert to fraction form
   3,558.43/5,337.69 = 961.42/x
3. Step 3: Cross multiply
   3,558.43x = 5,337.69 × 961.42
4. Step 4: Simplify right side
   3,558.43x = 5,131,761.92
5. Step 5: Solve for x
   x = 5,131,761.92/3,558.43
6. Step 6: Final answer
   x = 1,442.14