Finding the Fourth Proportional to 1,081.50, 1,492.74 and 616.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.50 : 1,492.74 = 616.02 : x
2. Step 2: Convert to fraction form
   1,081.50/1,492.74 = 616.02/x
3. Step 3: Cross multiply
   1,081.50x = 1,492.74 × 616.02
4. Step 4: Simplify right side
   1,081.50x = 919,557.69
5. Step 5: Solve for x
   x = 919,557.69/1,081.50
6. Step 6: Final answer
   x = 850.26