Finding the Fourth Proportional to 2,542.88, 3,816.79 and 1,227.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.88 : 3,816.79 = 1,227.56 : x
2. Step 2: Convert to fraction form
   2,542.88/3,816.79 = 1,227.56/x
3. Step 3: Cross multiply
   2,542.88x = 3,816.79 × 1,227.56
4. Step 4: Simplify right side
   2,542.88x = 4,685,340.73
5. Step 5: Solve for x
   x = 4,685,340.73/2,542.88
6. Step 6: Final answer
   x = 1,842.53