Finding the Fourth Proportional to 5,978.59, 8,968.26 and 1,818.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.59 : 8,968.26 = 1,818.91 : x
2. Step 2: Convert to fraction form
   5,978.59/8,968.26 = 1,818.91/x
3. Step 3: Cross multiply
   5,978.59x = 8,968.26 × 1,818.91
4. Step 4: Simplify right side
   5,978.59x = 16,312,475.83
5. Step 5: Solve for x
   x = 16,312,475.83/5,978.59
6. Step 6: Final answer
   x = 2,728.48