Finding the Fourth Proportional to 1,099.83, 1,517.90 and 634.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.83 : 1,517.90 = 634.17 : x
2. Step 2: Convert to fraction form
   1,099.83/1,517.90 = 634.17/x
3. Step 3: Cross multiply
   1,099.83x = 1,517.90 × 634.17
4. Step 4: Simplify right side
   1,099.83x = 962,603.47
5. Step 5: Solve for x
   x = 962,603.47/1,099.83
6. Step 6: Final answer
   x = 875.23