Finding the Fourth Proportional to 1,447.75, 1,997.81 and 850.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.75 : 1,997.81 = 850.17 : x
2. Step 2: Convert to fraction form
   1,447.75/1,997.81 = 850.17/x
3. Step 3: Cross multiply
   1,447.75x = 1,997.81 × 850.17
4. Step 4: Simplify right side
   1,447.75x = 1,698,463.89
5. Step 5: Solve for x
   x = 1,698,463.89/1,447.75
6. Step 6: Final answer
   x = 1,173.17