Finding the Fourth Proportional to 2,018.50, 2,786.03 and 1,233.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.50 : 2,786.03 = 1,233.21 : x
2. Step 2: Convert to fraction form
   2,018.50/2,786.03 = 1,233.21/x
3. Step 3: Cross multiply
   2,018.50x = 2,786.03 × 1,233.21
4. Step 4: Simplify right side
   2,018.50x = 3,435,760.06
5. Step 5: Solve for x
   x = 3,435,760.06/2,018.50
6. Step 6: Final answer
   x = 1,702.14