Finding the Fourth Proportional to 1,441.87, 1,989.51 and 852.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.87 : 1,989.51 = 852.31 : x
2. Step 2: Convert to fraction form
   1,441.87/1,989.51 = 852.31/x
3. Step 3: Cross multiply
   1,441.87x = 1,989.51 × 852.31
4. Step 4: Simplify right side
   1,441.87x = 1,695,679.27
5. Step 5: Solve for x
   x = 1,695,679.27/1,441.87
6. Step 6: Final answer
   x = 1,176.03