Finding the Fourth Proportional to 1,441.34, 1,988.88 and 851.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.34 : 1,988.88 = 851.88 : x
2. Step 2: Convert to fraction form
   1,441.34/1,988.88 = 851.88/x
3. Step 3: Cross multiply
   1,441.34x = 1,988.88 × 851.88
4. Step 4: Simplify right side
   1,441.34x = 1,694,287.09
5. Step 5: Solve for x
   x = 1,694,287.09/1,441.34
6. Step 6: Final answer
   x = 1,175.49