Finding the Fourth Proportional to 2,603.91, 3,906.21 and 1,371.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.91 : 3,906.21 = 1,371.41 : x
2. Step 2: Convert to fraction form
   2,603.91/3,906.21 = 1,371.41/x
3. Step 3: Cross multiply
   2,603.91x = 3,906.21 × 1,371.41
4. Step 4: Simplify right side
   2,603.91x = 5,357,015.46
5. Step 5: Solve for x
   x = 5,357,015.46/2,603.91
6. Step 6: Final answer
   x = 2,057.30