Finding the Fourth Proportional to 3,180.60, 4,389.59 and 3,078.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,180.60 : 4,389.59 = 3,078.54 : x
2. Step 2: Convert to fraction form
   3,180.60/4,389.59 = 3,078.54/x
3. Step 3: Cross multiply
   3,180.60x = 4,389.59 × 3,078.54
4. Step 4: Simplify right side
   3,180.60x = 13,513,536.09
5. Step 5: Solve for x
   x = 13,513,536.09/3,180.60
6. Step 6: Final answer
   x = 4,248.74