Finding the Fourth Proportional to 2,096.43, 3,144.90 and 779.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.43 : 3,144.90 = 779.88 : x
2. Step 2: Convert to fraction form
   2,096.43/3,144.90 = 779.88/x
3. Step 3: Cross multiply
   2,096.43x = 3,144.90 × 779.88
4. Step 4: Simplify right side
   2,096.43x = 2,452,644.61
5. Step 5: Solve for x
   x = 2,452,644.61/2,096.43
6. Step 6: Final answer
   x = 1,169.91