Finding the Fourth Proportional to 2,271, 3,131.10 and 1,680.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271 : 3,131.10 = 1,680.54 : x
2. Step 2: Convert to fraction form
   2,271/3,131.10 = 1,680.54/x
3. Step 3: Cross multiply
   2,271x = 3,131.10 × 1,680.54
4. Step 4: Simplify right side
   2,271x = 5,261,938.79
5. Step 5: Solve for x
   x = 5,261,938.79/2,271
6. Step 6: Final answer
   x = 2,317.01