Finding the Fourth Proportional to 1,155.69, 1,595.17 and 658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.69 : 1,595.17 = 658.50 : x
2. Step 2: Convert to fraction form
   1,155.69/1,595.17 = 658.50/x
3. Step 3: Cross multiply
   1,155.69x = 1,595.17 × 658.50
4. Step 4: Simplify right side
   1,155.69x = 1,050,425.89
5. Step 5: Solve for x
   x = 1,050,425.89/1,155.69
6. Step 6: Final answer
   x = 908.91