Finding the Fourth Proportional to 1,058.40, 1,460.52 and 616.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.40 : 1,460.52 = 616.32 : x
2. Step 2: Convert to fraction form
   1,058.40/1,460.52 = 616.32/x
3. Step 3: Cross multiply
   1,058.40x = 1,460.52 × 616.32
4. Step 4: Simplify right side
   1,058.40x = 900,147.69
5. Step 5: Solve for x
   x = 900,147.69/1,058.40
6. Step 6: Final answer
   x = 850.48