Finding the Fourth Proportional to 1,100.79, 1,518.51 and 658.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.79 : 1,518.51 = 658.62 : x
2. Step 2: Convert to fraction form
   1,100.79/1,518.51 = 658.62/x
3. Step 3: Cross multiply
   1,100.79x = 1,518.51 × 658.62
4. Step 4: Simplify right side
   1,100.79x = 1,000,121.06
5. Step 5: Solve for x
   x = 1,000,121.06/1,100.79
6. Step 6: Final answer
   x = 908.55