Finding the Fourth Proportional to 2,453.32, 3,679.50 and 809.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.32 : 3,679.50 = 809.56 : x
2. Step 2: Convert to fraction form
   2,453.32/3,679.50 = 809.56/x
3. Step 3: Cross multiply
   2,453.32x = 3,679.50 × 809.56
4. Step 4: Simplify right side
   2,453.32x = 2,978,776.02
5. Step 5: Solve for x
   x = 2,978,776.02/2,453.32
6. Step 6: Final answer
   x = 1,214.18