Finding the Fourth Proportional to 1,014.42, 1,399.71 and 616.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.42 : 1,399.71 = 616.11 : x
2. Step 2: Convert to fraction form
   1,014.42/1,399.71 = 616.11/x
3. Step 3: Cross multiply
   1,014.42x = 1,399.71 × 616.11
4. Step 4: Simplify right side
   1,014.42x = 862,375.33
5. Step 5: Solve for x
   x = 862,375.33/1,014.42
6. Step 6: Final answer
   x = 850.12