Finding the Fourth Proportional to 3,978.54, 5,968.79 and 2,810.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.54 : 5,968.79 = 2,810.84 : x
2. Step 2: Convert to fraction form
   3,978.54/5,968.79 = 2,810.84/x
3. Step 3: Cross multiply
   3,978.54x = 5,968.79 × 2,810.84
4. Step 4: Simplify right side
   3,978.54x = 16,777,269.79
5. Step 5: Solve for x
   x = 16,777,269.79/3,978.54
6. Step 6: Final answer
   x = 4,216.94