Finding the Fourth Proportional to 1,441.40, 1,989.16 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.40 : 1,989.16 = 851.94 : x
2. Step 2: Convert to fraction form
   1,441.40/1,989.16 = 851.94/x
3. Step 3: Cross multiply
   1,441.40x = 1,989.16 × 851.94
4. Step 4: Simplify right side
   1,441.40x = 1,694,635.02
5. Step 5: Solve for x
   x = 1,694,635.02/1,441.40
6. Step 6: Final answer
   x = 1,175.69