Finding the Fourth Proportional to 2,269.84, 3,404.37 and 808.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.84 : 3,404.37 = 808.78 : x
2. Step 2: Convert to fraction form
   2,269.84/3,404.37 = 808.78/x
3. Step 3: Cross multiply
   2,269.84x = 3,404.37 × 808.78
4. Step 4: Simplify right side
   2,269.84x = 2,753,386.37
5. Step 5: Solve for x
   x = 2,753,386.37/2,269.84
6. Step 6: Final answer
   x = 1,213.03