Finding the Fourth Proportional to 2,480.04, 3,719.34 and 1,439.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.04 : 3,719.34 = 1,439.86 : x
2. Step 2: Convert to fraction form
   2,480.04/3,719.34 = 1,439.86/x
3. Step 3: Cross multiply
   2,480.04x = 3,719.34 × 1,439.86
4. Step 4: Simplify right side
   2,480.04x = 5,355,328.89
5. Step 5: Solve for x
   x = 5,355,328.89/2,480.04
6. Step 6: Final answer
   x = 2,159.37