Finding the Fourth Proportional to 2,082.79, 3,123.40 and 849.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.79 : 3,123.40 = 849.54 : x
2. Step 2: Convert to fraction form
   2,082.79/3,123.40 = 849.54/x
3. Step 3: Cross multiply
   2,082.79x = 3,123.40 × 849.54
4. Step 4: Simplify right side
   2,082.79x = 2,653,453.24
5. Step 5: Solve for x
   x = 2,653,453.24/2,082.79
6. Step 6: Final answer
   x = 1,273.99