Finding the Fourth Proportional to 1,081.94, 1,493.13 and 616.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.94 : 1,493.13 = 616.34 : x
2. Step 2: Convert to fraction form
   1,081.94/1,493.13 = 616.34/x
3. Step 3: Cross multiply
   1,081.94x = 1,493.13 × 616.34
4. Step 4: Simplify right side
   1,081.94x = 920,275.74
5. Step 5: Solve for x
   x = 920,275.74/1,081.94
6. Step 6: Final answer
   x = 850.58