Finding the Fourth Proportional to 2,457.51, 3,685.90 and 814.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.51 : 3,685.90 = 814.07 : x
2. Step 2: Convert to fraction form
   2,457.51/3,685.90 = 814.07/x
3. Step 3: Cross multiply
   2,457.51x = 3,685.90 × 814.07
4. Step 4: Simplify right side
   2,457.51x = 3,000,580.61
5. Step 5: Solve for x
   x = 3,000,580.61/2,457.51
6. Step 6: Final answer
   x = 1,220.98