Finding the Fourth Proportional to 1,192.72, 1,789.04 and 805.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192.72 : 1,789.04 = 805.27 : x
2. Step 2: Convert to fraction form
   1,192.72/1,789.04 = 805.27/x
3. Step 3: Cross multiply
   1,192.72x = 1,789.04 × 805.27
4. Step 4: Simplify right side
   1,192.72x = 1,440,647.27
5. Step 5: Solve for x
   x = 1,440,647.27/1,192.72
6. Step 6: Final answer
   x = 1,207.87