Finding the Fourth Proportional to 2,566.31, 3,849.73 and 811.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,566.31 : 3,849.73 = 811.37 : x
2. Step 2: Convert to fraction form
   2,566.31/3,849.73 = 811.37/x
3. Step 3: Cross multiply
   2,566.31x = 3,849.73 × 811.37
4. Step 4: Simplify right side
   2,566.31x = 3,123,563.03
5. Step 5: Solve for x
   x = 3,123,563.03/2,566.31
6. Step 6: Final answer
   x = 1,217.14