Finding the Fourth Proportional to 2,499.29, 3,448.85 and 1,380.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.29 : 3,448.85 = 1,380.23 : x
2. Step 2: Convert to fraction form
   2,499.29/3,448.85 = 1,380.23/x
3. Step 3: Cross multiply
   2,499.29x = 3,448.85 × 1,380.23
4. Step 4: Simplify right side
   2,499.29x = 4,760,182.09
5. Step 5: Solve for x
   x = 4,760,182.09/2,499.29
6. Step 6: Final answer
   x = 1,904.62