Finding the Fourth Proportional to 2,785.93, 4,158.56 and 2,580.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.93 : 4,158.56 = 2,580.37 : x
2. Step 2: Convert to fraction form
   2,785.93/4,158.56 = 2,580.37/x
3. Step 3: Cross multiply
   2,785.93x = 4,158.56 × 2,580.37
4. Step 4: Simplify right side
   2,785.93x = 10,730,623.47
5. Step 5: Solve for x
   x = 10,730,623.47/2,785.93
6. Step 6: Final answer
   x = 3,851.72