Finding the Fourth Proportional to 2,010.92, 3,016.46 and 855.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.92 : 3,016.46 = 855.88 : x
2. Step 2: Convert to fraction form
   2,010.92/3,016.46 = 855.88/x
3. Step 3: Cross multiply
   2,010.92x = 3,016.46 × 855.88
4. Step 4: Simplify right side
   2,010.92x = 2,581,727.78
5. Step 5: Solve for x
   x = 2,581,727.78/2,010.92
6. Step 6: Final answer
   x = 1,283.85