Finding the Fourth Proportional to 1,058.55, 1,460.89 and 616.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.55 : 1,460.89 = 616.48 : x
2. Step 2: Convert to fraction form
   1,058.55/1,460.89 = 616.48/x
3. Step 3: Cross multiply
   1,058.55x = 1,460.89 × 616.48
4. Step 4: Simplify right side
   1,058.55x = 900,609.47
5. Step 5: Solve for x
   x = 900,609.47/1,058.55
6. Step 6: Final answer
   x = 850.80