Finding the Fourth Proportional to 1,077.74, 1,487.30 and 658.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.74 : 1,487.30 = 658.04 : x
2. Step 2: Convert to fraction form
   1,077.74/1,487.30 = 658.04/x
3. Step 3: Cross multiply
   1,077.74x = 1,487.30 × 658.04
4. Step 4: Simplify right side
   1,077.74x = 978,702.89
5. Step 5: Solve for x
   x = 978,702.89/1,077.74
6. Step 6: Final answer
   x = 908.11