Finding the Fourth Proportional to 2,789.94, 4,185.46 and 842.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.94 : 4,185.46 = 842.26 : x
2. Step 2: Convert to fraction form
   2,789.94/4,185.46 = 842.26/x
3. Step 3: Cross multiply
   2,789.94x = 4,185.46 × 842.26
4. Step 4: Simplify right side
   2,789.94x = 3,525,245.54
5. Step 5: Solve for x
   x = 3,525,245.54/2,789.94
6. Step 6: Final answer
   x = 1,263.56