Finding the Fourth Proportional to 2,794.79, 4,192.83 and 820.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,794.79 : 4,192.83 = 820.34 : x
2. Step 2: Convert to fraction form
   2,794.79/4,192.83 = 820.34/x
3. Step 3: Cross multiply
   2,794.79x = 4,192.83 × 820.34
4. Step 4: Simplify right side
   2,794.79x = 3,439,521.10
5. Step 5: Solve for x
   x = 3,439,521.10/2,794.79
6. Step 6: Final answer
   x = 1,230.69