Finding the Fourth Proportional to 3,645.15, 5,459.50 and 2,554.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645.15 : 5,459.50 = 2,554.38 : x
2. Step 2: Convert to fraction form
   3,645.15/5,459.50 = 2,554.38/x
3. Step 3: Cross multiply
   3,645.15x = 5,459.50 × 2,554.38
4. Step 4: Simplify right side
   3,645.15x = 13,945,637.61
5. Step 5: Solve for x
   x = 13,945,637.61/3,645.15
6. Step 6: Final answer
   x = 3,825.81