Finding the Fourth Proportional to 1,375.55, 1,898.61 and 851.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.55 : 1,898.61 = 851.27 : x
2. Step 2: Convert to fraction form
   1,375.55/1,898.61 = 851.27/x
3. Step 3: Cross multiply
   1,375.55x = 1,898.61 × 851.27
4. Step 4: Simplify right side
   1,375.55x = 1,616,229.73
5. Step 5: Solve for x
   x = 1,616,229.73/1,375.55
6. Step 6: Final answer
   x = 1,174.97