Finding the Fourth Proportional to 2,025.21, 3,036.56 and 854.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.21 : 3,036.56 = 854.61 : x
2. Step 2: Convert to fraction form
   2,025.21/3,036.56 = 854.61/x
3. Step 3: Cross multiply
   2,025.21x = 3,036.56 × 854.61
4. Step 4: Simplify right side
   2,025.21x = 2,595,070.27
5. Step 5: Solve for x
   x = 2,595,070.27/2,025.21
6. Step 6: Final answer
   x = 1,281.38