Finding the Fourth Proportional to 2,623.97, 3,936.83 and 1,064.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.97 : 3,936.83 = 1,064.31 : x
2. Step 2: Convert to fraction form
   2,623.97/3,936.83 = 1,064.31/x
3. Step 3: Cross multiply
   2,623.97x = 3,936.83 × 1,064.31
4. Step 4: Simplify right side
   2,623.97x = 4,190,002.22
5. Step 5: Solve for x
   x = 4,190,002.22/2,623.97
6. Step 6: Final answer
   x = 1,596.82