Finding the Fourth Proportional to 1,052.71, 1,452.61 and 610.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.71 : 1,452.61 = 610.55 : x
2. Step 2: Convert to fraction form
   1,052.71/1,452.61 = 610.55/x
3. Step 3: Cross multiply
   1,052.71x = 1,452.61 × 610.55
4. Step 4: Simplify right side
   1,052.71x = 886,882.25
5. Step 5: Solve for x
   x = 886,882.25/1,052.71
6. Step 6: Final answer
   x = 842.48