Finding the Fourth Proportional to 2,103.92, 3,155.52 and 804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.92 : 3,155.52 = 804.72 : x
2. Step 2: Convert to fraction form
   2,103.92/3,155.52 = 804.72/x
3. Step 3: Cross multiply
   2,103.92x = 3,155.52 × 804.72
4. Step 4: Simplify right side
   2,103.92x = 2,539,310.05
5. Step 5: Solve for x
   x = 2,539,310.05/2,103.92
6. Step 6: Final answer
   x = 1,206.94