Finding the Fourth Proportional to 3,947.05, 5,446.71 and 2,454.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.05 : 5,446.71 = 2,454.92 : x
2. Step 2: Convert to fraction form
   3,947.05/5,446.71 = 2,454.92/x
3. Step 3: Cross multiply
   3,947.05x = 5,446.71 × 2,454.92
4. Step 4: Simplify right side
   3,947.05x = 13,371,237.31
5. Step 5: Solve for x
   x = 13,371,237.31/3,947.05
6. Step 6: Final answer
   x = 3,387.66