Finding the Fourth Proportional to 2,238.57, 3,091.82 and 1,681.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.57 : 3,091.82 = 1,681.47 : x
2. Step 2: Convert to fraction form
   2,238.57/3,091.82 = 1,681.47/x
3. Step 3: Cross multiply
   2,238.57x = 3,091.82 × 1,681.47
4. Step 4: Simplify right side
   2,238.57x = 5,198,794.17
5. Step 5: Solve for x
   x = 5,198,794.17/2,238.57
6. Step 6: Final answer
   x = 2,322.37