Finding the Fourth Proportional to 2,018.11, 2,785.06 and 1,133.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.11 : 2,785.06 = 1,133.89 : x
2. Step 2: Convert to fraction form
   2,018.11/2,785.06 = 1,133.89/x
3. Step 3: Cross multiply
   2,018.11x = 2,785.06 × 1,133.89
4. Step 4: Simplify right side
   2,018.11x = 3,157,958.65
5. Step 5: Solve for x
   x = 3,157,958.65/2,018.11
6. Step 6: Final answer
   x = 1,564.81