Finding the Fourth Proportional to 1,151.16, 1,588.59 and 627.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.16 : 1,588.59 = 627.21 : x
2. Step 2: Convert to fraction form
   1,151.16/1,588.59 = 627.21/x
3. Step 3: Cross multiply
   1,151.16x = 1,588.59 × 627.21
4. Step 4: Simplify right side
   1,151.16x = 996,379.53
5. Step 5: Solve for x
   x = 996,379.53/1,151.16
6. Step 6: Final answer
   x = 865.54