Finding the Fourth Proportional to 1,031.96, 1,424.01 and 612.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.96 : 1,424.01 = 612.27 : x
2. Step 2: Convert to fraction form
   1,031.96/1,424.01 = 612.27/x
3. Step 3: Cross multiply
   1,031.96x = 1,424.01 × 612.27
4. Step 4: Simplify right side
   1,031.96x = 871,878.60
5. Step 5: Solve for x
   x = 871,878.60/1,031.96
6. Step 6: Final answer
   x = 844.88