Finding the Fourth Proportional to 5,978.77, 8,968.46 and 2,280.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.77 : 8,968.46 = 2,280.31 : x
2. Step 2: Convert to fraction form
   5,978.77/8,968.46 = 2,280.31/x
3. Step 3: Cross multiply
   5,978.77x = 8,968.46 × 2,280.31
4. Step 4: Simplify right side
   5,978.77x = 20,450,835.20
5. Step 5: Solve for x
   x = 20,450,835.20/5,978.77
6. Step 6: Final answer
   x = 3,420.58