Finding the Fourth Proportional to 1,081.88, 1,493.00 and 616.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.88 : 1,493.00 = 616.13 : x
2. Step 2: Convert to fraction form
   1,081.88/1,493.00 = 616.13/x
3. Step 3: Cross multiply
   1,081.88x = 1,493.00 × 616.13
4. Step 4: Simplify right side
   1,081.88x = 919,871.54
5. Step 5: Solve for x
   x = 919,871.54/1,081.88
6. Step 6: Final answer
   x = 850.26