Finding the Fourth Proportional to 2,419.86, 3,339.47 and 1,371.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.86 : 3,339.47 = 1,371.91 : x
2. Step 2: Convert to fraction form
   2,419.86/3,339.47 = 1,371.91/x
3. Step 3: Cross multiply
   2,419.86x = 3,339.47 × 1,371.91
4. Step 4: Simplify right side
   2,419.86x = 4,581,452.29
5. Step 5: Solve for x
   x = 4,581,452.29/2,419.86
6. Step 6: Final answer
   x = 1,893.27