Finding the Fourth Proportional to 2,577.89, 3,872.75 and 1,839.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.89 : 3,872.75 = 1,839.38 : x
2. Step 2: Convert to fraction form
   2,577.89/3,872.75 = 1,839.38/x
3. Step 3: Cross multiply
   2,577.89x = 3,872.75 × 1,839.38
4. Step 4: Simplify right side
   2,577.89x = 7,123,430.33
5. Step 5: Solve for x
   x = 7,123,430.33/2,577.89
6. Step 6: Final answer
   x = 2,763.28