Finding the Fourth Proportional to 2,406.16, 3,320.85 and 1,411.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.16 : 3,320.85 = 1,411.30 : x
2. Step 2: Convert to fraction form
   2,406.16/3,320.85 = 1,411.30/x
3. Step 3: Cross multiply
   2,406.16x = 3,320.85 × 1,411.30
4. Step 4: Simplify right side
   2,406.16x = 4,686,715.61
5. Step 5: Solve for x
   x = 4,686,715.61/2,406.16
6. Step 6: Final answer
   x = 1,947.80