Finding the Fourth Proportional to 5,978.75, 8,964.51 and 2,281.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.75 : 8,964.51 = 2,281.25 : x
2. Step 2: Convert to fraction form
   5,978.75/8,964.51 = 2,281.25/x
3. Step 3: Cross multiply
   5,978.75x = 8,964.51 × 2,281.25
4. Step 4: Simplify right side
   5,978.75x = 20,450,243.61
5. Step 5: Solve for x
   x = 20,450,243.61/5,978.75
6. Step 6: Final answer
   x = 3,420.49