Finding the Fourth Proportional to 1,150.62, 1,587.82 and 626.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.62 : 1,587.82 = 626.64 : x
2. Step 2: Convert to fraction form
   1,150.62/1,587.82 = 626.64/x
3. Step 3: Cross multiply
   1,150.62x = 1,587.82 × 626.64
4. Step 4: Simplify right side
   1,150.62x = 994,991.52
5. Step 5: Solve for x
   x = 994,991.52/1,150.62
6. Step 6: Final answer
   x = 864.74