Finding the Fourth Proportional to 2,439.45, 3,661.47 and 1,342.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.45 : 3,661.47 = 1,342.31 : x
2. Step 2: Convert to fraction form
   2,439.45/3,661.47 = 1,342.31/x
3. Step 3: Cross multiply
   2,439.45x = 3,661.47 × 1,342.31
4. Step 4: Simplify right side
   2,439.45x = 4,914,809.49
5. Step 5: Solve for x
   x = 4,914,809.49/2,439.45
6. Step 6: Final answer
   x = 2,014.72