Finding the Fourth Proportional to 1,446.23, 1,995.81 and 783.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.23 : 1,995.81 = 783.09 : x
2. Step 2: Convert to fraction form
   1,446.23/1,995.81 = 783.09/x
3. Step 3: Cross multiply
   1,446.23x = 1,995.81 × 783.09
4. Step 4: Simplify right side
   1,446.23x = 1,562,898.05
5. Step 5: Solve for x
   x = 1,562,898.05/1,446.23
6. Step 6: Final answer
   x = 1,080.67