Finding the Fourth Proportional to 2,499.05, 3,448.71 and 1,379.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.05 : 3,448.71 = 1,379.99 : x
2. Step 2: Convert to fraction form
   2,499.05/3,448.71 = 1,379.99/x
3. Step 3: Cross multiply
   2,499.05x = 3,448.71 × 1,379.99
4. Step 4: Simplify right side
   2,499.05x = 4,759,168.07
5. Step 5: Solve for x
   x = 4,759,168.07/2,499.05
6. Step 6: Final answer
   x = 1,904.39