Finding the Fourth Proportional to 3,943.46, 5,441.59 and 2,430.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,943.46 : 5,441.59 = 2,430.78 : x
2. Step 2: Convert to fraction form
   3,943.46/5,441.59 = 2,430.78/x
3. Step 3: Cross multiply
   3,943.46x = 5,441.59 × 2,430.78
4. Step 4: Simplify right side
   3,943.46x = 13,227,315.67
5. Step 5: Solve for x
   x = 13,227,315.67/3,943.46
6. Step 6: Final answer
   x = 3,354.24