Finding the Fourth Proportional to 2,698.79, 4,048.72 and 850.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,698.79 : 4,048.72 = 850.19 : x
2. Step 2: Convert to fraction form
   2,698.79/4,048.72 = 850.19/x
3. Step 3: Cross multiply
   2,698.79x = 4,048.72 × 850.19
4. Step 4: Simplify right side
   2,698.79x = 3,442,158.89
5. Step 5: Solve for x
   x = 3,442,158.89/2,698.79
6. Step 6: Final answer
   x = 1,275.45