Finding the Fourth Proportional to 2,805.03, 3,867.89 and 2,577.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.03 : 3,867.89 = 2,577.15 : x
2. Step 2: Convert to fraction form
   2,805.03/3,867.89 = 2,577.15/x
3. Step 3: Cross multiply
   2,805.03x = 3,867.89 × 2,577.15
4. Step 4: Simplify right side
   2,805.03x = 9,968,119.83
5. Step 5: Solve for x
   x = 9,968,119.83/2,805.03
6. Step 6: Final answer
   x = 3,553.66