Finding the Fourth Proportional to 2,643.78, 3,966.26 and 1,410.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.78 : 3,966.26 = 1,410.54 : x
2. Step 2: Convert to fraction form
   2,643.78/3,966.26 = 1,410.54/x
3. Step 3: Cross multiply
   2,643.78x = 3,966.26 × 1,410.54
4. Step 4: Simplify right side
   2,643.78x = 5,594,568.38
5. Step 5: Solve for x
   x = 5,594,568.38/2,643.78
6. Step 6: Final answer
   x = 2,116.12