Finding the Fourth Proportional to 2,641.94, 3,963.27 and 1,409.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.94 : 3,963.27 = 1,409.30 : x
2. Step 2: Convert to fraction form
   2,641.94/3,963.27 = 1,409.30/x
3. Step 3: Cross multiply
   2,641.94x = 3,963.27 × 1,409.30
4. Step 4: Simplify right side
   2,641.94x = 5,585,436.41
5. Step 5: Solve for x
   x = 5,585,436.41/2,641.94
6. Step 6: Final answer
   x = 2,114.14