Finding the Fourth Proportional to 1,150.37, 1,587.53 and 626.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.37 : 1,587.53 = 626.40 : x
2. Step 2: Convert to fraction form
   1,150.37/1,587.53 = 626.40/x
3. Step 3: Cross multiply
   1,150.37x = 1,587.53 × 626.40
4. Step 4: Simplify right side
   1,150.37x = 994,436.31
5. Step 5: Solve for x
   x = 994,436.31/1,150.37
6. Step 6: Final answer
   x = 864.45