Finding the Fourth Proportional to 1,153.62, 1,727.82 and 658.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.62 : 1,727.82 = 658.89 : x
2. Step 2: Convert to fraction form
   1,153.62/1,727.82 = 658.89/x
3. Step 3: Cross multiply
   1,153.62x = 1,727.82 × 658.89
4. Step 4: Simplify right side
   1,153.62x = 1,138,443.32
5. Step 5: Solve for x
   x = 1,138,443.32/1,153.62
6. Step 6: Final answer
   x = 986.84