Finding the Fourth Proportional to 1,446.96, 1,996.56 and 857.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.96 : 1,996.56 = 857.46 : x
2. Step 2: Convert to fraction form
   1,446.96/1,996.56 = 857.46/x
3. Step 3: Cross multiply
   1,446.96x = 1,996.56 × 857.46
4. Step 4: Simplify right side
   1,446.96x = 1,711,970.34
5. Step 5: Solve for x
   x = 1,711,970.34/1,446.96
6. Step 6: Final answer
   x = 1,183.15