Finding the Fourth Proportional to 2,869.59, 4,304.29 and 817.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,869.59 : 4,304.29 = 817.59 : x
2. Step 2: Convert to fraction form
   2,869.59/4,304.29 = 817.59/x
3. Step 3: Cross multiply
   2,869.59x = 4,304.29 × 817.59
4. Step 4: Simplify right side
   2,869.59x = 3,519,144.46
5. Step 5: Solve for x
   x = 3,519,144.46/2,869.59
6. Step 6: Final answer
   x = 1,226.36