Finding the Fourth Proportional to 2,018.89, 2,786.21 and 1,134.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.89 : 2,786.21 = 1,134.78 : x
2. Step 2: Convert to fraction form
   2,018.89/2,786.21 = 1,134.78/x
3. Step 3: Cross multiply
   2,018.89x = 2,786.21 × 1,134.78
4. Step 4: Simplify right side
   2,018.89x = 3,161,735.38
5. Step 5: Solve for x
   x = 3,161,735.38/2,018.89
6. Step 6: Final answer
   x = 1,566.08