Finding the Fourth Proportional to 3,854.22, 5,778.89 and 2,124.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854.22 : 5,778.89 = 2,124.06 : x
2. Step 2: Convert to fraction form
   3,854.22/5,778.89 = 2,124.06/x
3. Step 3: Cross multiply
   3,854.22x = 5,778.89 × 2,124.06
4. Step 4: Simplify right side
   3,854.22x = 12,274,709.09
5. Step 5: Solve for x
   x = 12,274,709.09/3,854.22
6. Step 6: Final answer
   x = 3,184.75