Finding the Fourth Proportional to 1,131.18, 1,560.99 and 627.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.18 : 1,560.99 = 627.01 : x
2. Step 2: Convert to fraction form
   1,131.18/1,560.99 = 627.01/x
3. Step 3: Cross multiply
   1,131.18x = 1,560.99 × 627.01
4. Step 4: Simplify right side
   1,131.18x = 978,751.69
5. Step 5: Solve for x
   x = 978,751.69/1,131.18
6. Step 6: Final answer
   x = 865.25