Finding the Fourth Proportional to 2,499.48, 3,449.35 and 1,380.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.48 : 3,449.35 = 1,380.43 : x
2. Step 2: Convert to fraction form
   2,499.48/3,449.35 = 1,380.43/x
3. Step 3: Cross multiply
   2,499.48x = 3,449.35 × 1,380.43
4. Step 4: Simplify right side
   2,499.48x = 4,761,582.77
5. Step 5: Solve for x
   x = 4,761,582.77/2,499.48
6. Step 6: Final answer
   x = 1,905.03