Finding the Fourth Proportional to 1,375.28, 1,898.62 and 851.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.28 : 1,898.62 = 851.62 : x
2. Step 2: Convert to fraction form
   1,375.28/1,898.62 = 851.62/x
3. Step 3: Cross multiply
   1,375.28x = 1,898.62 × 851.62
4. Step 4: Simplify right side
   1,375.28x = 1,616,902.76
5. Step 5: Solve for x
   x = 1,616,902.76/1,375.28
6. Step 6: Final answer
   x = 1,175.69