Finding the Fourth Proportional to 1,046.67, 1,443.20 and 784.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.67 : 1,443.20 = 784.23 : x
2. Step 2: Convert to fraction form
   1,046.67/1,443.20 = 784.23/x
3. Step 3: Cross multiply
   1,046.67x = 1,443.20 × 784.23
4. Step 4: Simplify right side
   1,046.67x = 1,131,796.81
5. Step 5: Solve for x
   x = 1,131,796.81/1,046.67
6. Step 6: Final answer
   x = 1,081.33