Finding the Fourth Proportional to 2,025.74, 3,039.12 and 856.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.74 : 3,039.12 = 856.04 : x
2. Step 2: Convert to fraction form
   2,025.74/3,039.12 = 856.04/x
3. Step 3: Cross multiply
   2,025.74x = 3,039.12 × 856.04
4. Step 4: Simplify right side
   2,025.74x = 2,601,608.28
5. Step 5: Solve for x
   x = 2,601,608.28/2,025.74
6. Step 6: Final answer
   x = 1,284.28