Finding the Fourth Proportional to 2,663.49, 3,995.37 and 814.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.49 : 3,995.37 = 814.65 : x
2. Step 2: Convert to fraction form
   2,663.49/3,995.37 = 814.65/x
3. Step 3: Cross multiply
   2,663.49x = 3,995.37 × 814.65
4. Step 4: Simplify right side
   2,663.49x = 3,254,828.17
5. Step 5: Solve for x
   x = 3,254,828.17/2,663.49
6. Step 6: Final answer
   x = 1,222.02