Finding the Fourth Proportional to 1,099.91, 1,517.72 and 658.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.91 : 1,517.72 = 658.01 : x
2. Step 2: Convert to fraction form
   1,099.91/1,517.72 = 658.01/x
3. Step 3: Cross multiply
   1,099.91x = 1,517.72 × 658.01
4. Step 4: Simplify right side
   1,099.91x = 998,664.06
5. Step 5: Solve for x
   x = 998,664.06/1,099.91
6. Step 6: Final answer
   x = 907.95