Finding the Fourth Proportional to 1,100.36, 1,518.54 and 658.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.36 : 1,518.54 = 658.55 : x
2. Step 2: Convert to fraction form
   1,100.36/1,518.54 = 658.55/x
3. Step 3: Cross multiply
   1,100.36x = 1,518.54 × 658.55
4. Step 4: Simplify right side
   1,100.36x = 1,000,034.52
5. Step 5: Solve for x
   x = 1,000,034.52/1,100.36
6. Step 6: Final answer
   x = 908.82