Finding the Fourth Proportional to 3,826.25, 5,278.72 and 2,331.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.25 : 5,278.72 = 2,331.59 : x
2. Step 2: Convert to fraction form
   3,826.25/5,278.72 = 2,331.59/x
3. Step 3: Cross multiply
   3,826.25x = 5,278.72 × 2,331.59
4. Step 4: Simplify right side
   3,826.25x = 12,307,782.91
5. Step 5: Solve for x
   x = 12,307,782.91/3,826.25
6. Step 6: Final answer
   x = 3,216.67