Finding the Fourth Proportional to 2,843.98, 4,266.61 and 869.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,843.98 : 4,266.61 = 869.79 : x
2. Step 2: Convert to fraction form
   2,843.98/4,266.61 = 869.79/x
3. Step 3: Cross multiply
   2,843.98x = 4,266.61 × 869.79
4. Step 4: Simplify right side
   2,843.98x = 3,711,054.71
5. Step 5: Solve for x
   x = 3,711,054.71/2,843.98
6. Step 6: Final answer
   x = 1,304.88