Finding the Fourth Proportional to 2,499.54, 3,449.36 and 1,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.54 : 3,449.36 = 1,380.47 : x
2. Step 2: Convert to fraction form
   2,499.54/3,449.36 = 1,380.47/x
3. Step 3: Cross multiply
   2,499.54x = 3,449.36 × 1,380.47
4. Step 4: Simplify right side
   2,499.54x = 4,761,713.85
5. Step 5: Solve for x
   x = 4,761,713.85/2,499.54
6. Step 6: Final answer
   x = 1,905.04