Finding the Fourth Proportional to 1,446.48, 1,995.66 and 856.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.48 : 1,995.66 = 856.89 : x
2. Step 2: Convert to fraction form
   1,446.48/1,995.66 = 856.89/x
3. Step 3: Cross multiply
   1,446.48x = 1,995.66 × 856.89
4. Step 4: Simplify right side
   1,446.48x = 1,710,061.10
5. Step 5: Solve for x
   x = 1,710,061.10/1,446.48
6. Step 6: Final answer
   x = 1,182.22