Finding the Fourth Proportional to 1,445.96, 1,995.33 and 856.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.96 : 1,995.33 = 856.54 : x
2. Step 2: Convert to fraction form
   1,445.96/1,995.33 = 856.54/x
3. Step 3: Cross multiply
   1,445.96x = 1,995.33 × 856.54
4. Step 4: Simplify right side
   1,445.96x = 1,709,079.96
5. Step 5: Solve for x
   x = 1,709,079.96/1,445.96
6. Step 6: Final answer
   x = 1,181.97