Finding the Fourth Proportional to 3,854.59, 5,779.46 and 2,124.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854.59 : 5,779.46 = 2,124.43 : x
2. Step 2: Convert to fraction form
   3,854.59/5,779.46 = 2,124.43/x
3. Step 3: Cross multiply
   3,854.59x = 5,779.46 × 2,124.43
4. Step 4: Simplify right side
   3,854.59x = 12,278,047.59
5. Step 5: Solve for x
   x = 12,278,047.59/3,854.59
6. Step 6: Final answer
   x = 3,185.31