Finding the Fourth Proportional to 2,078.14, 3,118.13 and 1,615.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.14 : 3,118.13 = 1,615.23 : x
2. Step 2: Convert to fraction form
   2,078.14/3,118.13 = 1,615.23/x
3. Step 3: Cross multiply
   2,078.14x = 3,118.13 × 1,615.23
4. Step 4: Simplify right side
   2,078.14x = 5,036,473.45
5. Step 5: Solve for x
   x = 5,036,473.45/2,078.14
6. Step 6: Final answer
   x = 2,423.55