Finding the Fourth Proportional to 1,151.15, 1,588.56 and 627.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.15 : 1,588.56 = 627.18 : x
2. Step 2: Convert to fraction form
   1,151.15/1,588.56 = 627.18/x
3. Step 3: Cross multiply
   1,151.15x = 1,588.56 × 627.18
4. Step 4: Simplify right side
   1,151.15x = 996,313.06
5. Step 5: Solve for x
   x = 996,313.06/1,151.15
6. Step 6: Final answer
   x = 865.50