Finding the Fourth Proportional to 2,603.71, 3,593.12 and 1,424.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.71 : 3,593.12 = 1,424.78 : x
2. Step 2: Convert to fraction form
   2,603.71/3,593.12 = 1,424.78/x
3. Step 3: Cross multiply
   2,603.71x = 3,593.12 × 1,424.78
4. Step 4: Simplify right side
   2,603.71x = 5,119,411.79
5. Step 5: Solve for x
   x = 5,119,411.79/2,603.71
6. Step 6: Final answer
   x = 1,966.20