Finding the Fourth Proportional to 1,441.92, 1,989.82 and 803.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.92 : 1,989.82 = 803.85 : x
2. Step 2: Convert to fraction form
   1,441.92/1,989.82 = 803.85/x
3. Step 3: Cross multiply
   1,441.92x = 1,989.82 × 803.85
4. Step 4: Simplify right side
   1,441.92x = 1,599,516.81
5. Step 5: Solve for x
   x = 1,599,516.81/1,441.92
6. Step 6: Final answer
   x = 1,109.30