Finding the Fourth Proportional to 3,898.34, 5,379.72 and 2,326.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.34 : 5,379.72 = 2,326.40 : x
2. Step 2: Convert to fraction form
   3,898.34/5,379.72 = 2,326.40/x
3. Step 3: Cross multiply
   3,898.34x = 5,379.72 × 2,326.40
4. Step 4: Simplify right side
   3,898.34x = 12,515,380.61
5. Step 5: Solve for x
   x = 12,515,380.61/3,898.34
6. Step 6: Final answer
   x = 3,210.44