Finding the Fourth Proportional to 2,579.55, 3,885.77 and 2,355.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.55 : 3,885.77 = 2,355.38 : x
2. Step 2: Convert to fraction form
   2,579.55/3,885.77 = 2,355.38/x
3. Step 3: Cross multiply
   2,579.55x = 3,885.77 × 2,355.38
4. Step 4: Simplify right side
   2,579.55x = 9,152,462.88
5. Step 5: Solve for x
   x = 9,152,462.88/2,579.55
6. Step 6: Final answer
   x = 3,548.09