Finding the Fourth Proportional to 1,099.31, 1,517.06 and 633.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.31 : 1,517.06 = 633.56 : x
2. Step 2: Convert to fraction form
   1,099.31/1,517.06 = 633.56/x
3. Step 3: Cross multiply
   1,099.31x = 1,517.06 × 633.56
4. Step 4: Simplify right side
   1,099.31x = 961,149.16
5. Step 5: Solve for x
   x = 961,149.16/1,099.31
6. Step 6: Final answer
   x = 874.32