Finding the Fourth Proportional to 5,456.86, 8,185.89 and 1,947.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,456.86 : 8,185.89 = 1,947.69 : x
2. Step 2: Convert to fraction form
   5,456.86/8,185.89 = 1,947.69/x
3. Step 3: Cross multiply
   5,456.86x = 8,185.89 × 1,947.69
4. Step 4: Simplify right side
   5,456.86x = 15,943,542.47
5. Step 5: Solve for x
   x = 15,943,542.47/5,456.86
6. Step 6: Final answer
   x = 2,921.74