Finding the Fourth Proportional to 2,191.02, 3,285.54 and 804.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.02 : 3,285.54 = 804.12 : x
2. Step 2: Convert to fraction form
   2,191.02/3,285.54 = 804.12/x
3. Step 3: Cross multiply
   2,191.02x = 3,285.54 × 804.12
4. Step 4: Simplify right side
   2,191.02x = 2,641,968.42
5. Step 5: Solve for x
   x = 2,641,968.42/2,191.02
6. Step 6: Final answer
   x = 1,205.82