Finding the Fourth Proportional to 3,947.15, 5,446.89 and 2,268.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.15 : 5,446.89 = 2,268.42 : x
2. Step 2: Convert to fraction form
   3,947.15/5,446.89 = 2,268.42/x
3. Step 3: Cross multiply
   3,947.15x = 5,446.89 × 2,268.42
4. Step 4: Simplify right side
   3,947.15x = 12,355,834.21
5. Step 5: Solve for x
   x = 12,355,834.21/3,947.15
6. Step 6: Final answer
   x = 3,130.32