Finding the Fourth Proportional to 3,894.83, 5,374.82 and 2,402.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,894.83 : 5,374.82 = 2,402.15 : x
2. Step 2: Convert to fraction form
   3,894.83/5,374.82 = 2,402.15/x
3. Step 3: Cross multiply
   3,894.83x = 5,374.82 × 2,402.15
4. Step 4: Simplify right side
   3,894.83x = 12,911,123.86
5. Step 5: Solve for x
   x = 12,911,123.86/3,894.83
6. Step 6: Final answer
   x = 3,314.94