Finding the Fourth Proportional to 1,113.93, 1,537.25 and 616.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.93 : 1,537.25 = 616.59 : x
2. Step 2: Convert to fraction form
   1,113.93/1,537.25 = 616.59/x
3. Step 3: Cross multiply
   1,113.93x = 1,537.25 × 616.59
4. Step 4: Simplify right side
   1,113.93x = 947,849.89
5. Step 5: Solve for x
   x = 947,849.89/1,113.93
6. Step 6: Final answer
   x = 850.91