Finding the Fourth Proportional to 1,150.15, 1,587.20 and 626.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.15 : 1,587.20 = 626.17 : x
2. Step 2: Convert to fraction form
   1,150.15/1,587.20 = 626.17/x
3. Step 3: Cross multiply
   1,150.15x = 1,587.20 × 626.17
4. Step 4: Simplify right side
   1,150.15x = 993,857.02
5. Step 5: Solve for x
   x = 993,857.02/1,150.15
6. Step 6: Final answer
   x = 864.11