Finding the Fourth Proportional to 2,721.78, 4,083.12 and 1,241.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.78 : 4,083.12 = 1,241.10 : x
2. Step 2: Convert to fraction form
   2,721.78/4,083.12 = 1,241.10/x
3. Step 3: Cross multiply
   2,721.78x = 4,083.12 × 1,241.10
4. Step 4: Simplify right side
   2,721.78x = 5,067,560.23
5. Step 5: Solve for x
   x = 5,067,560.23/2,721.78
6. Step 6: Final answer
   x = 1,861.86