Finding the Fourth Proportional to 1,443.69, 1,992.33 and 854.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.69 : 1,992.33 = 854.69 : x
2. Step 2: Convert to fraction form
   1,443.69/1,992.33 = 854.69/x
3. Step 3: Cross multiply
   1,443.69x = 1,992.33 × 854.69
4. Step 4: Simplify right side
   1,443.69x = 1,702,814.57
5. Step 5: Solve for x
   x = 1,702,814.57/1,443.69
6. Step 6: Final answer
   x = 1,179.49