Finding the Fourth Proportional to 2,636.80, 3,628.56 and 2,338.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.80 : 3,628.56 = 2,338.72 : x
2. Step 2: Convert to fraction form
   2,636.80/3,628.56 = 2,338.72/x
3. Step 3: Cross multiply
   2,636.80x = 3,628.56 × 2,338.72
4. Step 4: Simplify right side
   2,636.80x = 8,486,185.84
5. Step 5: Solve for x
   x = 8,486,185.84/2,636.80
6. Step 6: Final answer
   x = 3,218.37