Finding the Fourth Proportional to 1,062.42, 1,467.48 and 816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.42 : 1,467.48 = 816.72 : x
2. Step 2: Convert to fraction form
   1,062.42/1,467.48 = 816.72/x
3. Step 3: Cross multiply
   1,062.42x = 1,467.48 × 816.72
4. Step 4: Simplify right side
   1,062.42x = 1,198,520.27
5. Step 5: Solve for x
   x = 1,198,520.27/1,062.42
6. Step 6: Final answer
   x = 1,128.10