Finding the Fourth Proportional to 1,099.69, 1,517.58 and 602.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.69 : 1,517.58 = 602.35 : x
2. Step 2: Convert to fraction form
   1,099.69/1,517.58 = 602.35/x
3. Step 3: Cross multiply
   1,099.69x = 1,517.58 × 602.35
4. Step 4: Simplify right side
   1,099.69x = 914,114.31
5. Step 5: Solve for x
   x = 914,114.31/1,099.69
6. Step 6: Final answer
   x = 831.25