Finding the Fourth Proportional to 3,947.98, 5,448.23 and 2,179.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.98 : 5,448.23 = 2,179.69 : x
2. Step 2: Convert to fraction form
   3,947.98/5,448.23 = 2,179.69/x
3. Step 3: Cross multiply
   3,947.98x = 5,448.23 × 2,179.69
4. Step 4: Simplify right side
   3,947.98x = 11,875,452.45
5. Step 5: Solve for x
   x = 11,875,452.45/3,947.98
6. Step 6: Final answer
   x = 3,007.98