Finding the Fourth Proportional to 2,623.72, 3,934.62 and 1,324.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.72 : 3,934.62 = 1,324.28 : x
2. Step 2: Convert to fraction form
   2,623.72/3,934.62 = 1,324.28/x
3. Step 3: Cross multiply
   2,623.72x = 3,934.62 × 1,324.28
4. Step 4: Simplify right side
   2,623.72x = 5,210,538.57
5. Step 5: Solve for x
   x = 5,210,538.57/2,623.72
6. Step 6: Final answer
   x = 1,985.94