Finding the Fourth Proportional to 1,155.90, 1,595.24 and 658.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.90 : 1,595.24 = 658.43 : x
2. Step 2: Convert to fraction form
   1,155.90/1,595.24 = 658.43/x
3. Step 3: Cross multiply
   1,155.90x = 1,595.24 × 658.43
4. Step 4: Simplify right side
   1,155.90x = 1,050,359.51
5. Step 5: Solve for x
   x = 1,050,359.51/1,155.90
6. Step 6: Final answer
   x = 908.69