Finding the Fourth Proportional to 2,426.56, 3,347.76 and 1,639.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.56 : 3,347.76 = 1,639.36 : x
2. Step 2: Convert to fraction form
   2,426.56/3,347.76 = 1,639.36/x
3. Step 3: Cross multiply
   2,426.56x = 3,347.76 × 1,639.36
4. Step 4: Simplify right side
   2,426.56x = 5,488,183.83
5. Step 5: Solve for x
   x = 5,488,183.83/2,426.56
6. Step 6: Final answer
   x = 2,261.71