Finding the Fourth Proportional to 2,457.94, 3,687.46 and 814.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.94 : 3,687.46 = 814.48 : x
2. Step 2: Convert to fraction form
   2,457.94/3,687.46 = 814.48/x
3. Step 3: Cross multiply
   2,457.94x = 3,687.46 × 814.48
4. Step 4: Simplify right side
   2,457.94x = 3,003,362.42
5. Step 5: Solve for x
   x = 3,003,362.42/2,457.94
6. Step 6: Final answer
   x = 1,221.90