Finding the Fourth Proportional to 2,499.69, 3,449.58 and 1,380.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.69 : 3,449.58 = 1,380.66 : x
2. Step 2: Convert to fraction form
   2,499.69/3,449.58 = 1,380.66/x
3. Step 3: Cross multiply
   2,499.69x = 3,449.58 × 1,380.66
4. Step 4: Simplify right side
   2,499.69x = 4,762,697.12
5. Step 5: Solve for x
   x = 4,762,697.12/2,499.69
6. Step 6: Final answer
   x = 1,905.32