Finding the Fourth Proportional to 5,978.63, 8,968.29 and 1,818.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.63 : 8,968.29 = 1,818.78 : x
2. Step 2: Convert to fraction form
   5,978.63/8,968.29 = 1,818.78/x
3. Step 3: Cross multiply
   5,978.63x = 8,968.29 × 1,818.78
4. Step 4: Simplify right side
   5,978.63x = 16,311,292.55
5. Step 5: Solve for x
   x = 16,311,292.55/5,978.63
6. Step 6: Final answer
   x = 2,728.27