Finding the Fourth Proportional to 2,268.80, 3,402.72 and 808.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.80 : 3,402.72 = 808.04 : x
2. Step 2: Convert to fraction form
   2,268.80/3,402.72 = 808.04/x
3. Step 3: Cross multiply
   2,268.80x = 3,402.72 × 808.04
4. Step 4: Simplify right side
   2,268.80x = 2,749,533.87
5. Step 5: Solve for x
   x = 2,749,533.87/2,268.80
6. Step 6: Final answer
   x = 1,211.89