Finding the Fourth Proportional to 1,058.69, 1,461.38 and 616.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058.69 : 1,461.38 = 616.59 : x
2. Step 2: Convert to fraction form
   1,058.69/1,461.38 = 616.59/x
3. Step 3: Cross multiply
   1,058.69x = 1,461.38 × 616.59
4. Step 4: Simplify right side
   1,058.69x = 901,069.21
5. Step 5: Solve for x
   x = 901,069.21/1,058.69
6. Step 6: Final answer
   x = 851.12