Finding the Fourth Proportional to 1,383.89, 1,909.64 and 852.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.89 : 1,909.64 = 852.62 : x
2. Step 2: Convert to fraction form
   1,383.89/1,909.64 = 852.62/x
3. Step 3: Cross multiply
   1,383.89x = 1,909.64 × 852.62
4. Step 4: Simplify right side
   1,383.89x = 1,628,183.45
5. Step 5: Solve for x
   x = 1,628,183.45/1,383.89
6. Step 6: Final answer
   x = 1,176.53