Finding the Fourth Proportional to 1,446.24, 1,995.84 and 783.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.24 : 1,995.84 = 783.12 : x
2. Step 2: Convert to fraction form
   1,446.24/1,995.84 = 783.12/x
3. Step 3: Cross multiply
   1,446.24x = 1,995.84 × 783.12
4. Step 4: Simplify right side
   1,446.24x = 1,562,982.22
5. Step 5: Solve for x
   x = 1,562,982.22/1,446.24
6. Step 6: Final answer
   x = 1,080.72