Finding the Fourth Proportional to 1,446.94, 1,996.79 and 783.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.94 : 1,996.79 = 783.81 : x
2. Step 2: Convert to fraction form
   1,446.94/1,996.79 = 783.81/x
3. Step 3: Cross multiply
   1,446.94x = 1,996.79 × 783.81
4. Step 4: Simplify right side
   1,446.94x = 1,565,105.93
5. Step 5: Solve for x
   x = 1,565,105.93/1,446.94
6. Step 6: Final answer
   x = 1,081.67