Finding the Fourth Proportional to 1,049.42, 1,572.59 and 658.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.42 : 1,572.59 = 658.49 : x
2. Step 2: Convert to fraction form
   1,049.42/1,572.59 = 658.49/x
3. Step 3: Cross multiply
   1,049.42x = 1,572.59 × 658.49
4. Step 4: Simplify right side
   1,049.42x = 1,035,537.78
5. Step 5: Solve for x
   x = 1,035,537.78/1,049.42
6. Step 6: Final answer
   x = 986.77