Finding the Fourth Proportional to 2,480.99, 3,423.78 and 1,361.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.99 : 3,423.78 = 1,361.90 : x
2. Step 2: Convert to fraction form
   2,480.99/3,423.78 = 1,361.90/x
3. Step 3: Cross multiply
   2,480.99x = 3,423.78 × 1,361.90
4. Step 4: Simplify right side
   2,480.99x = 4,662,828.86
5. Step 5: Solve for x
   x = 4,662,828.86/2,480.99
6. Step 6: Final answer
   x = 1,879.43