Finding the Fourth Proportional to 2,457.06, 3,684.83 and 813.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.06 : 3,684.83 = 813.27 : x
2. Step 2: Convert to fraction form
   2,457.06/3,684.83 = 813.27/x
3. Step 3: Cross multiply
   2,457.06x = 3,684.83 × 813.27
4. Step 4: Simplify right side
   2,457.06x = 2,996,761.69
5. Step 5: Solve for x
   x = 2,996,761.69/2,457.06
6. Step 6: Final answer
   x = 1,219.65