Finding the Fourth Proportional to 2,664.38, 3,997.86 and 1,105.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.38 : 3,997.86 = 1,105.58 : x
2. Step 2: Convert to fraction form
   2,664.38/3,997.86 = 1,105.58/x
3. Step 3: Cross multiply
   2,664.38x = 3,997.86 × 1,105.58
4. Step 4: Simplify right side
   2,664.38x = 4,419,954.06
5. Step 5: Solve for x
   x = 4,419,954.06/2,664.38
6. Step 6: Final answer
   x = 1,658.91