Finding the Fourth Proportional to 1,150.31, 1,587.41 and 626.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.31 : 1,587.41 = 626.35 : x
2. Step 2: Convert to fraction form
   1,150.31/1,587.41 = 626.35/x
3. Step 3: Cross multiply
   1,150.31x = 1,587.41 × 626.35
4. Step 4: Simplify right side
   1,150.31x = 994,266.32
5. Step 5: Solve for x
   x = 994,266.32/1,150.31
6. Step 6: Final answer
   x = 864.35