Finding the Fourth Proportional to 1,031.35, 1,423.46 and 806.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.35 : 1,423.46 = 806.83 : x
2. Step 2: Convert to fraction form
   1,031.35/1,423.46 = 806.83/x
3. Step 3: Cross multiply
   1,031.35x = 1,423.46 × 806.83
4. Step 4: Simplify right side
   1,031.35x = 1,148,491.54
5. Step 5: Solve for x
   x = 1,148,491.54/1,031.35
6. Step 6: Final answer
   x = 1,113.58