Finding the Fourth Proportional to 2,457.48, 3,685.86 and 814.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.48 : 3,685.86 = 814.08 : x
2. Step 2: Convert to fraction form
   2,457.48/3,685.86 = 814.08/x
3. Step 3: Cross multiply
   2,457.48x = 3,685.86 × 814.08
4. Step 4: Simplify right side
   2,457.48x = 3,000,584.91
5. Step 5: Solve for x
   x = 3,000,584.91/2,457.48
6. Step 6: Final answer
   x = 1,221.00