Finding the Fourth Proportional to 1,151.93, 1,589.72 and 627.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.93 : 1,589.72 = 627.98 : x
2. Step 2: Convert to fraction form
   1,151.93/1,589.72 = 627.98/x
3. Step 3: Cross multiply
   1,151.93x = 1,589.72 × 627.98
4. Step 4: Simplify right side
   1,151.93x = 998,301.28
5. Step 5: Solve for x
   x = 998,301.28/1,151.93
6. Step 6: Final answer
   x = 866.63