Finding the Fourth Proportional to 1,446.30, 1,996.20 and 856.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.30 : 1,996.20 = 856.98 : x
2. Step 2: Convert to fraction form
   1,446.30/1,996.20 = 856.98/x
3. Step 3: Cross multiply
   1,446.30x = 1,996.20 × 856.98
4. Step 4: Simplify right side
   1,446.30x = 1,710,703.48
5. Step 5: Solve for x
   x = 1,710,703.48/1,446.30
6. Step 6: Final answer
   x = 1,182.81