Finding the Fourth Proportional to 2,456.58, 3,685.53 and 2,018.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.58 : 3,685.53 = 2,018.58 : x
2. Step 2: Convert to fraction form
   2,456.58/3,685.53 = 2,018.58/x
3. Step 3: Cross multiply
   2,456.58x = 3,685.53 × 2,018.58
4. Step 4: Simplify right side
   2,456.58x = 7,439,537.15
5. Step 5: Solve for x
   x = 7,439,537.15/2,456.58
6. Step 6: Final answer
   x = 3,028.41