Finding the Fourth Proportional to 3,935.89, 5,430.31 and 2,234.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.89 : 5,430.31 = 2,234.12 : x
2. Step 2: Convert to fraction form
   3,935.89/5,430.31 = 2,234.12/x
3. Step 3: Cross multiply
   3,935.89x = 5,430.31 × 2,234.12
4. Step 4: Simplify right side
   3,935.89x = 12,131,925.86
5. Step 5: Solve for x
   x = 12,131,925.86/3,935.89
6. Step 6: Final answer
   x = 3,082.38