Finding the Fourth Proportional to 2,788.56, 3,846.78 and 1,857.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.56 : 3,846.78 = 1,857.24 : x
2. Step 2: Convert to fraction form
   2,788.56/3,846.78 = 1,857.24/x
3. Step 3: Cross multiply
   2,788.56x = 3,846.78 × 1,857.24
4. Step 4: Simplify right side
   2,788.56x = 7,144,393.69
5. Step 5: Solve for x
   x = 7,144,393.69/2,788.56
6. Step 6: Final answer
   x = 2,562.04