Finding the Fourth Proportional to 2,499.19, 3,448.89 and 1,380.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.19 : 3,448.89 = 1,380.16 : x
2. Step 2: Convert to fraction form
   2,499.19/3,448.89 = 1,380.16/x
3. Step 3: Cross multiply
   2,499.19x = 3,448.89 × 1,380.16
4. Step 4: Simplify right side
   2,499.19x = 4,760,020.02
5. Step 5: Solve for x
   x = 4,760,020.02/2,499.19
6. Step 6: Final answer
   x = 1,904.63