Finding the Fourth Proportional to 2,604.48, 3,900.90 and 2,015.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.48 : 3,900.90 = 2,015.47 : x
2. Step 2: Convert to fraction form
   2,604.48/3,900.90 = 2,015.47/x
3. Step 3: Cross multiply
   2,604.48x = 3,900.90 × 2,015.47
4. Step 4: Simplify right side
   2,604.48x = 7,862,146.92
5. Step 5: Solve for x
   x = 7,862,146.92/2,604.48
6. Step 6: Final answer
   x = 3,018.70