Finding the Fourth Proportional to 1,446.05, 1,995.03 and 856.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.05 : 1,995.03 = 856.58 : x
2. Step 2: Convert to fraction form
   1,446.05/1,995.03 = 856.58/x
3. Step 3: Cross multiply
   1,446.05x = 1,995.03 × 856.58
4. Step 4: Simplify right side
   1,446.05x = 1,708,892.82
5. Step 5: Solve for x
   x = 1,708,892.82/1,446.05
6. Step 6: Final answer
   x = 1,181.76