Finding the Fourth Proportional to 1,099.80, 1,517.72 and 602.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.80 : 1,517.72 = 602.46 : x
2. Step 2: Convert to fraction form
   1,099.80/1,517.72 = 602.46/x
3. Step 3: Cross multiply
   1,099.80x = 1,517.72 × 602.46
4. Step 4: Simplify right side
   1,099.80x = 914,358.00
5. Step 5: Solve for x
   x = 914,358.00/1,099.80
6. Step 6: Final answer
   x = 831.39