Finding the Fourth Proportional to 1,441.21, 1,989.27 and 852.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.21 : 1,989.27 = 852.07 : x
2. Step 2: Convert to fraction form
   1,441.21/1,989.27 = 852.07/x
3. Step 3: Cross multiply
   1,441.21x = 1,989.27 × 852.07
4. Step 4: Simplify right side
   1,441.21x = 1,694,997.29
5. Step 5: Solve for x
   x = 1,694,997.29/1,441.21
6. Step 6: Final answer
   x = 1,176.09