Finding the Fourth Proportional to 3,558.38, 5,337.59 and 961.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.38 : 5,337.59 = 961.34 : x
2. Step 2: Convert to fraction form
   3,558.38/5,337.59 = 961.34/x
3. Step 3: Cross multiply
   3,558.38x = 5,337.59 × 961.34
4. Step 4: Simplify right side
   3,558.38x = 5,131,207.28
5. Step 5: Solve for x
   x = 5,131,207.28/3,558.38
6. Step 6: Final answer
   x = 1,442.01