Finding the Fourth Proportional to 1,630.45, 2,443.83 and 809.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.45 : 2,443.83 = 809.29 : x
2. Step 2: Convert to fraction form
   1,630.45/2,443.83 = 809.29/x
3. Step 3: Cross multiply
   1,630.45x = 2,443.83 × 809.29
4. Step 4: Simplify right side
   1,630.45x = 1,977,767.18
5. Step 5: Solve for x
   x = 1,977,767.18/1,630.45
6. Step 6: Final answer
   x = 1,213.02