Finding the Fourth Proportional to 1,098.30, 1,515.69 and 626.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.30 : 1,515.69 = 626.27 : x
2. Step 2: Convert to fraction form
   1,098.30/1,515.69 = 626.27/x
3. Step 3: Cross multiply
   1,098.30x = 1,515.69 × 626.27
4. Step 4: Simplify right side
   1,098.30x = 949,223.60
5. Step 5: Solve for x
   x = 949,223.60/1,098.30
6. Step 6: Final answer
   x = 864.27