Finding the Fourth Proportional to 2,768.10, 4,150.71 and 919.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,768.10 : 4,150.71 = 919.02 : x
2. Step 2: Convert to fraction form
   2,768.10/4,150.71 = 919.02/x
3. Step 3: Cross multiply
   2,768.10x = 4,150.71 × 919.02
4. Step 4: Simplify right side
   2,768.10x = 3,814,585.50
5. Step 5: Solve for x
   x = 3,814,585.50/2,768.10
6. Step 6: Final answer
   x = 1,378.05