Finding the Fourth Proportional to 1,046.69, 1,443.92 and 812.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.69 : 1,443.92 = 812.19 : x
2. Step 2: Convert to fraction form
   1,046.69/1,443.92 = 812.19/x
3. Step 3: Cross multiply
   1,046.69x = 1,443.92 × 812.19
4. Step 4: Simplify right side
   1,046.69x = 1,172,733.32
5. Step 5: Solve for x
   x = 1,172,733.32/1,046.69
6. Step 6: Final answer
   x = 1,120.43