Finding the Fourth Proportional to 1,120.42, 1,546.20 and 616.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.42 : 1,546.20 = 616.27 : x
2. Step 2: Convert to fraction form
   1,120.42/1,546.20 = 616.27/x
3. Step 3: Cross multiply
   1,120.42x = 1,546.20 × 616.27
4. Step 4: Simplify right side
   1,120.42x = 952,876.67
5. Step 5: Solve for x
   x = 952,876.67/1,120.42
6. Step 6: Final answer
   x = 850.46