Finding the Fourth Proportional to 1,443.61, 1,992.51 and 854.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.61 : 1,992.51 = 854.24 : x
2. Step 2: Convert to fraction form
   1,443.61/1,992.51 = 854.24/x
3. Step 3: Cross multiply
   1,443.61x = 1,992.51 × 854.24
4. Step 4: Simplify right side
   1,443.61x = 1,702,081.74
5. Step 5: Solve for x
   x = 1,702,081.74/1,443.61
6. Step 6: Final answer
   x = 1,179.05