Finding the Fourth Proportional to 2,568.04, 3,845.52 and 2,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.04 : 3,845.52 = 2,155 : x
2. Step 2: Convert to fraction form
   2,568.04/3,845.52 = 2,155/x
3. Step 3: Cross multiply
   2,568.04x = 3,845.52 × 2,155
4. Step 4: Simplify right side
   2,568.04x = 8,287,095.60
5. Step 5: Solve for x
   x = 8,287,095.60/2,568.04
6. Step 6: Final answer
   x = 3,227.01