Finding the Fourth Proportional to 2,603.78, 3,593.21 and 1,424.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.78 : 3,593.21 = 1,424.83 : x
2. Step 2: Convert to fraction form
   2,603.78/3,593.21 = 1,424.83/x
3. Step 3: Cross multiply
   2,603.78x = 3,593.21 × 1,424.83
4. Step 4: Simplify right side
   2,603.78x = 5,119,697.30
5. Step 5: Solve for x
   x = 5,119,697.30/2,603.78
6. Step 6: Final answer
   x = 1,966.25