Finding the Fourth Proportional to 1,092.72, 1,635.83 and 658.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.72 : 1,635.83 = 658.56 : x
2. Step 2: Convert to fraction form
   1,092.72/1,635.83 = 658.56/x
3. Step 3: Cross multiply
   1,092.72x = 1,635.83 × 658.56
4. Step 4: Simplify right side
   1,092.72x = 1,077,292.20
5. Step 5: Solve for x
   x = 1,077,292.20/1,092.72
6. Step 6: Final answer
   x = 985.88