Finding the Fourth Proportional to 2,453.37, 3,679.50 and 809.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.37 : 3,679.50 = 809.49 : x
2. Step 2: Convert to fraction form
   2,453.37/3,679.50 = 809.49/x
3. Step 3: Cross multiply
   2,453.37x = 3,679.50 × 809.49
4. Step 4: Simplify right side
   2,453.37x = 2,978,518.46
5. Step 5: Solve for x
   x = 2,978,518.46/2,453.37
6. Step 6: Final answer
   x = 1,214.05