Finding the Fourth Proportional to 1,150.54, 1,587.81 and 626.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.54 : 1,587.81 = 626.56 : x
2. Step 2: Convert to fraction form
   1,150.54/1,587.81 = 626.56/x
3. Step 3: Cross multiply
   1,150.54x = 1,587.81 × 626.56
4. Step 4: Simplify right side
   1,150.54x = 994,858.23
5. Step 5: Solve for x
   x = 994,858.23/1,150.54
6. Step 6: Final answer
   x = 864.69