Finding the Fourth Proportional to 1,099.67, 1,517.42 and 627.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.67 : 1,517.42 = 627.58 : x
2. Step 2: Convert to fraction form
   1,099.67/1,517.42 = 627.58/x
3. Step 3: Cross multiply
   1,099.67x = 1,517.42 × 627.58
4. Step 4: Simplify right side
   1,099.67x = 952,300.22
5. Step 5: Solve for x
   x = 952,300.22/1,099.67
6. Step 6: Final answer
   x = 865.99