Finding the Fourth Proportional to 1,293.31, 1,784.82 and 769.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.31 : 1,784.82 = 769.42 : x
2. Step 2: Convert to fraction form
   1,293.31/1,784.82 = 769.42/x
3. Step 3: Cross multiply
   1,293.31x = 1,784.82 × 769.42
4. Step 4: Simplify right side
   1,293.31x = 1,373,276.20
5. Step 5: Solve for x
   x = 1,373,276.20/1,293.31
6. Step 6: Final answer
   x = 1,061.83