Finding the Fourth Proportional to 3,894.27, 5,373.90 and 2,402.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,894.27 : 5,373.90 = 2,402.31 : x
2. Step 2: Convert to fraction form
   3,894.27/5,373.90 = 2,402.31/x
3. Step 3: Cross multiply
   3,894.27x = 5,373.90 × 2,402.31
4. Step 4: Simplify right side
   3,894.27x = 12,909,773.71
5. Step 5: Solve for x
   x = 12,909,773.71/3,894.27
6. Step 6: Final answer
   x = 3,315.07