Finding the Fourth Proportional to 1,445.37, 1,995.06 and 856.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.37 : 1,995.06 = 856.09 : x
2. Step 2: Convert to fraction form
   1,445.37/1,995.06 = 856.09/x
3. Step 3: Cross multiply
   1,445.37x = 1,995.06 × 856.09
4. Step 4: Simplify right side
   1,445.37x = 1,707,950.92
5. Step 5: Solve for x
   x = 1,707,950.92/1,445.37
6. Step 6: Final answer
   x = 1,181.67