Finding the Fourth Proportional to 3,693.39, 5,540.89 and 1,228.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693.39 : 5,540.89 = 1,228.56 : x
2. Step 2: Convert to fraction form
   3,693.39/5,540.89 = 1,228.56/x
3. Step 3: Cross multiply
   3,693.39x = 5,540.89 × 1,228.56
4. Step 4: Simplify right side
   3,693.39x = 6,807,315.82
5. Step 5: Solve for x
   x = 6,807,315.82/3,693.39
6. Step 6: Final answer
   x = 1,843.11