Finding the Fourth Proportional to 1,472.42, 2,031.90 and 851.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.42 : 2,031.90 = 851.42 : x
2. Step 2: Convert to fraction form
   1,472.42/2,031.90 = 851.42/x
3. Step 3: Cross multiply
   1,472.42x = 2,031.90 × 851.42
4. Step 4: Simplify right side
   1,472.42x = 1,730,000.30
5. Step 5: Solve for x
   x = 1,730,000.30/1,472.42
6. Step 6: Final answer
   x = 1,174.94