Finding the Fourth Proportional to 1,151.39, 1,588.89 and 627.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.39 : 1,588.89 = 627.41 : x
2. Step 2: Convert to fraction form
   1,151.39/1,588.89 = 627.41/x
3. Step 3: Cross multiply
   1,151.39x = 1,588.89 × 627.41
4. Step 4: Simplify right side
   1,151.39x = 996,885.47
5. Step 5: Solve for x
   x = 996,885.47/1,151.39
6. Step 6: Final answer
   x = 865.81