Finding the Fourth Proportional to 2,498.70, 3,448.17 and 1,379.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.70 : 3,448.17 = 1,379.61 : x
2. Step 2: Convert to fraction form
   2,498.70/3,448.17 = 1,379.61/x
3. Step 3: Cross multiply
   2,498.70x = 3,448.17 × 1,379.61
4. Step 4: Simplify right side
   2,498.70x = 4,757,129.81
5. Step 5: Solve for x
   x = 4,757,129.81/2,498.70
6. Step 6: Final answer
   x = 1,903.84