Finding the Fourth Proportional to 2,499.46, 3,449.24 and 1,380.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.46 : 3,449.24 = 1,380.39 : x
2. Step 2: Convert to fraction form
   2,499.46/3,449.24 = 1,380.39/x
3. Step 3: Cross multiply
   2,499.46x = 3,449.24 × 1,380.39
4. Step 4: Simplify right side
   2,499.46x = 4,761,302.12
5. Step 5: Solve for x
   x = 4,761,302.12/2,499.46
6. Step 6: Final answer
   x = 1,904.93