Finding the Fourth Proportional to 2,018.67, 2,785.41 and 1,857.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.67 : 2,785.41 = 1,857.36 : x
2. Step 2: Convert to fraction form
   2,018.67/2,785.41 = 1,857.36/x
3. Step 3: Cross multiply
   2,018.67x = 2,785.41 × 1,857.36
4. Step 4: Simplify right side
   2,018.67x = 5,173,509.12
5. Step 5: Solve for x
   x = 5,173,509.12/2,018.67
6. Step 6: Final answer
   x = 2,562.83