Finding the Fourth Proportional to 2,406.81, 3,320.46 and 1,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.81 : 3,320.46 = 1,411.72 : x
2. Step 2: Convert to fraction form
   2,406.81/3,320.46 = 1,411.72/x
3. Step 3: Cross multiply
   2,406.81x = 3,320.46 × 1,411.72
4. Step 4: Simplify right side
   2,406.81x = 4,687,559.79
5. Step 5: Solve for x
   x = 4,687,559.79/2,406.81
6. Step 6: Final answer
   x = 1,947.62