Finding the Fourth Proportional to 2,636.91, 3,946.78 and 1,943.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.91 : 3,946.78 = 1,943.30 : x
2. Step 2: Convert to fraction form
   2,636.91/3,946.78 = 1,943.30/x
3. Step 3: Cross multiply
   2,636.91x = 3,946.78 × 1,943.30
4. Step 4: Simplify right side
   2,636.91x = 7,669,777.57
5. Step 5: Solve for x
   x = 7,669,777.57/2,636.91
6. Step 6: Final answer
   x = 2,908.62