Finding the Fourth Proportional to 3,826.54, 5,730.69 and 2,657.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.54 : 5,730.69 = 2,657.71 : x
2. Step 2: Convert to fraction form
   3,826.54/5,730.69 = 2,657.71/x
3. Step 3: Cross multiply
   3,826.54x = 5,730.69 × 2,657.71
4. Step 4: Simplify right side
   3,826.54x = 15,230,483.47
5. Step 5: Solve for x
   x = 15,230,483.47/3,826.54
6. Step 6: Final answer
   x = 3,980.23