Finding the Fourth Proportional to 3,963.81, 5,469.55 and 2,285.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,963.81 : 5,469.55 = 2,285.29 : x
2. Step 2: Convert to fraction form
   3,963.81/5,469.55 = 2,285.29/x
3. Step 3: Cross multiply
   3,963.81x = 5,469.55 × 2,285.29
4. Step 4: Simplify right side
   3,963.81x = 12,499,507.92
5. Step 5: Solve for x
   x = 12,499,507.92/3,963.81
6. Step 6: Final answer
   x = 3,153.41