Finding the Fourth Proportional to 2,096.99, 3,146.00 and 780.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.99 : 3,146.00 = 780.79 : x
2. Step 2: Convert to fraction form
   2,096.99/3,146.00 = 780.79/x
3. Step 3: Cross multiply
   2,096.99x = 3,146.00 × 780.79
4. Step 4: Simplify right side
   2,096.99x = 2,456,353.57
5. Step 5: Solve for x
   x = 2,456,353.57/2,096.99
6. Step 6: Final answer
   x = 1,171.37