Finding the Fourth Proportional to 3,012.82, 4,157.69 and 1,686.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.82 : 4,157.69 = 1,686.54 : x
2. Step 2: Convert to fraction form
   3,012.82/4,157.69 = 1,686.54/x
3. Step 3: Cross multiply
   3,012.82x = 4,157.69 × 1,686.54
4. Step 4: Simplify right side
   3,012.82x = 7,012,110.49
5. Step 5: Solve for x
   x = 7,012,110.49/3,012.82
6. Step 6: Final answer
   x = 2,327.42