Finding the Fourth Proportional to 1,100.50, 1,518.69 and 658.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.50 : 1,518.69 = 658.47 : x
2. Step 2: Convert to fraction form
   1,100.50/1,518.69 = 658.47/x
3. Step 3: Cross multiply
   1,100.50x = 1,518.69 × 658.47
4. Step 4: Simplify right side
   1,100.50x = 1,000,004.21
5. Step 5: Solve for x
   x = 1,000,004.21/1,100.50
6. Step 6: Final answer
   x = 908.68