Finding the Fourth Proportional to 2,499.65, 3,449.23 and 1,380.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.65 : 3,449.23 = 1,380.53 : x
2. Step 2: Convert to fraction form
   2,499.65/3,449.23 = 1,380.53/x
3. Step 3: Cross multiply
   2,499.65x = 3,449.23 × 1,380.53
4. Step 4: Simplify right side
   2,499.65x = 4,761,746.59
5. Step 5: Solve for x
   x = 4,761,746.59/2,499.65
6. Step 6: Final answer
   x = 1,904.96