Finding the Fourth Proportional to 1,058.56, 1,460.77 and 616.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.56 : 1,460.77 = 616.46 : x
2. Step 2: Convert to fraction form
   1,058.56/1,460.77 = 616.46/x
3. Step 3: Cross multiply
   1,058.56x = 1,460.77 × 616.46
4. Step 4: Simplify right side
   1,058.56x = 900,506.27
5. Step 5: Solve for x
   x = 900,506.27/1,058.56
6. Step 6: Final answer
   x = 850.69