Finding the Fourth Proportional to 1,446.25, 1,995.83 and 783.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.25 : 1,995.83 = 783.11 : x
2. Step 2: Convert to fraction form
   1,446.25/1,995.83 = 783.11/x
3. Step 3: Cross multiply
   1,446.25x = 1,995.83 × 783.11
4. Step 4: Simplify right side
   1,446.25x = 1,562,947.02
5. Step 5: Solve for x
   x = 1,562,947.02/1,446.25
6. Step 6: Final answer
   x = 1,080.69