Finding the Fourth Proportional to 2,568.54, 3,545.46 and 1,978.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.54 : 3,545.46 = 1,978.32 : x
2. Step 2: Convert to fraction form
   2,568.54/3,545.46 = 1,978.32/x
3. Step 3: Cross multiply
   2,568.54x = 3,545.46 × 1,978.32
4. Step 4: Simplify right side
   2,568.54x = 7,014,054.43
5. Step 5: Solve for x
   x = 7,014,054.43/2,568.54
6. Step 6: Final answer
   x = 2,730.76