Finding the Fourth Proportional to 3,593.40, 5,386.38 and 2,603.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,593.40 : 5,386.38 = 2,603.79 : x
2. Step 2: Convert to fraction form
   3,593.40/5,386.38 = 2,603.79/x
3. Step 3: Cross multiply
   3,593.40x = 5,386.38 × 2,603.79
4. Step 4: Simplify right side
   3,593.40x = 14,025,002.38
5. Step 5: Solve for x
   x = 14,025,002.38/3,593.40
6. Step 6: Final answer
   x = 3,902.99