Finding the Fourth Proportional to 1,166.42, 1,608.18 and 851.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,166.42 : 1,608.18 = 851.42 : x
2. Step 2: Convert to fraction form
   1,166.42/1,608.18 = 851.42/x
3. Step 3: Cross multiply
   1,166.42x = 1,608.18 × 851.42
4. Step 4: Simplify right side
   1,166.42x = 1,369,236.62
5. Step 5: Solve for x
   x = 1,369,236.62/1,166.42
6. Step 6: Final answer
   x = 1,173.88