Finding the Fourth Proportional to 1,296.96, 1,789.56 and 773.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.96 : 1,789.56 = 773.04 : x
2. Step 2: Convert to fraction form
   1,296.96/1,789.56 = 773.04/x
3. Step 3: Cross multiply
   1,296.96x = 1,789.56 × 773.04
4. Step 4: Simplify right side
   1,296.96x = 1,383,401.46
5. Step 5: Solve for x
   x = 1,383,401.46/1,296.96
6. Step 6: Final answer
   x = 1,066.65