Finding the Fourth Proportional to 3,936.38, 5,905.52 and 1,200.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.38 : 5,905.52 = 1,200.38 : x
2. Step 2: Convert to fraction form
   3,936.38/5,905.52 = 1,200.38/x
3. Step 3: Cross multiply
   3,936.38x = 5,905.52 × 1,200.38
4. Step 4: Simplify right side
   3,936.38x = 7,088,841.57
5. Step 5: Solve for x
   x = 7,088,841.57/3,936.38
6. Step 6: Final answer
   x = 1,800.86