Finding the Fourth Proportional to 1,150.18, 1,587.25 and 626.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.18 : 1,587.25 = 626.21 : x
2. Step 2: Convert to fraction form
   1,150.18/1,587.25 = 626.21/x
3. Step 3: Cross multiply
   1,150.18x = 1,587.25 × 626.21
4. Step 4: Simplify right side
   1,150.18x = 993,950.62
5. Step 5: Solve for x
   x = 993,950.62/1,150.18
6. Step 6: Final answer
   x = 864.17