Finding the Fourth Proportional to 2,634.69, 3,942.72 and 1,939.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.69 : 3,942.72 = 1,939.71 : x
2. Step 2: Convert to fraction form
   2,634.69/3,942.72 = 1,939.71/x
3. Step 3: Cross multiply
   2,634.69x = 3,942.72 × 1,939.71
4. Step 4: Simplify right side
   2,634.69x = 7,647,733.41
5. Step 5: Solve for x
   x = 7,647,733.41/2,634.69
6. Step 6: Final answer
   x = 2,902.71