Finding the Fourth Proportional to 2,643.84, 3,964.41 and 1,411.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.84 : 3,964.41 = 1,411.92 : x
2. Step 2: Convert to fraction form
   2,643.84/3,964.41 = 1,411.92/x
3. Step 3: Cross multiply
   2,643.84x = 3,964.41 × 1,411.92
4. Step 4: Simplify right side
   2,643.84x = 5,597,429.77
5. Step 5: Solve for x
   x = 5,597,429.77/2,643.84
6. Step 6: Final answer
   x = 2,117.16