Finding the Fourth Proportional to 1,446.83, 1,996.63 and 783.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.83 : 1,996.63 = 783.69 : x
2. Step 2: Convert to fraction form
   1,446.83/1,996.63 = 783.69/x
3. Step 3: Cross multiply
   1,446.83x = 1,996.63 × 783.69
4. Step 4: Simplify right side
   1,446.83x = 1,564,734.95
5. Step 5: Solve for x
   x = 1,564,734.95/1,446.83
6. Step 6: Final answer
   x = 1,081.49