Finding the Fourth Proportional to 2,019.78, 2,786.94 and 1,234.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.78 : 2,786.94 = 1,234.08 : x
2. Step 2: Convert to fraction form
   2,019.78/2,786.94 = 1,234.08/x
3. Step 3: Cross multiply
   2,019.78x = 2,786.94 × 1,234.08
4. Step 4: Simplify right side
   2,019.78x = 3,439,306.92
5. Step 5: Solve for x
   x = 3,439,306.92/2,019.78
6. Step 6: Final answer
   x = 1,702.81