Finding the Fourth Proportional to 1,446.06, 1,995.60 and 856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.06 : 1,995.60 = 856.50 : x
2. Step 2: Convert to fraction form
   1,446.06/1,995.60 = 856.50/x
3. Step 3: Cross multiply
   1,446.06x = 1,995.60 × 856.50
4. Step 4: Simplify right side
   1,446.06x = 1,709,231.40
5. Step 5: Solve for x
   x = 1,709,231.40/1,446.06
6. Step 6: Final answer
   x = 1,181.99