Finding the Fourth Proportional to 3,879.60, 5,353.89 and 2,285.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,879.60 : 5,353.89 = 2,285.94 : x
2. Step 2: Convert to fraction form
   3,879.60/5,353.89 = 2,285.94/x
3. Step 3: Cross multiply
   3,879.60x = 5,353.89 × 2,285.94
4. Step 4: Simplify right side
   3,879.60x = 12,238,671.31
5. Step 5: Solve for x
   x = 12,238,671.31/3,879.60
6. Step 6: Final answer
   x = 3,154.62