Finding the Fourth Proportional to 2,019.20, 2,786.13 and 1,949.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.20 : 2,786.13 = 1,949.00 : x
2. Step 2: Convert to fraction form
   2,019.20/2,786.13 = 1,949.00/x
3. Step 3: Cross multiply
   2,019.20x = 2,786.13 × 1,949.00
4. Step 4: Simplify right side
   2,019.20x = 5,430,153.44
5. Step 5: Solve for x
   x = 5,430,153.44/2,019.20
6. Step 6: Final answer
   x = 2,689.27