Finding the Fourth Proportional to 1,441.38, 1,989.15 and 852.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.38 : 1,989.15 = 852.30 : x
2. Step 2: Convert to fraction form
   1,441.38/1,989.15 = 852.30/x
3. Step 3: Cross multiply
   1,441.38x = 1,989.15 × 852.30
4. Step 4: Simplify right side
   1,441.38x = 1,695,352.55
5. Step 5: Solve for x
   x = 1,695,352.55/1,441.38
6. Step 6: Final answer
   x = 1,176.20