Finding the Fourth Proportional to 5,978.07, 8,968.73 and 2,082.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.07 : 8,968.73 = 2,082.78 : x
2. Step 2: Convert to fraction form
   5,978.07/8,968.73 = 2,082.78/x
3. Step 3: Cross multiply
   5,978.07x = 8,968.73 × 2,082.78
4. Step 4: Simplify right side
   5,978.07x = 18,679,881.06
5. Step 5: Solve for x
   x = 18,679,881.06/5,978.07
6. Step 6: Final answer
   x = 3,124.73