Finding the Fourth Proportional to 2,147.48, 3,221.43 and 1,684.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.48 : 3,221.43 = 1,684.41 : x
2. Step 2: Convert to fraction form
   2,147.48/3,221.43 = 1,684.41/x
3. Step 3: Cross multiply
   2,147.48x = 3,221.43 × 1,684.41
4. Step 4: Simplify right side
   2,147.48x = 5,426,208.91
5. Step 5: Solve for x
   x = 5,426,208.91/2,147.48
6. Step 6: Final answer
   x = 2,526.78