Finding the Fourth Proportional to 2,643.58, 3,964.56 and 2,269.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.58 : 3,964.56 = 2,269.72 : x
2. Step 2: Convert to fraction form
   2,643.58/3,964.56 = 2,269.72/x
3. Step 3: Cross multiply
   2,643.58x = 3,964.56 × 2,269.72
4. Step 4: Simplify right side
   2,643.58x = 8,998,441.12
5. Step 5: Solve for x
   x = 8,998,441.12/2,643.58
6. Step 6: Final answer
   x = 3,403.88