Finding the Fourth Proportional to 2,439.46, 3,656.54 and 1,397.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.46 : 3,656.54 = 1,397.20 : x
2. Step 2: Convert to fraction form
   2,439.46/3,656.54 = 1,397.20/x
3. Step 3: Cross multiply
   2,439.46x = 3,656.54 × 1,397.20
4. Step 4: Simplify right side
   2,439.46x = 5,108,917.69
5. Step 5: Solve for x
   x = 5,108,917.69/2,439.46
6. Step 6: Final answer
   x = 2,094.28