Finding the Fourth Proportional to 2,794.72, 4,193.42 and 1,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,794.72 : 4,193.42 = 1,978.24 : x
2. Step 2: Convert to fraction form
   2,794.72/4,193.42 = 1,978.24/x
3. Step 3: Cross multiply
   2,794.72x = 4,193.42 × 1,978.24
4. Step 4: Simplify right side
   2,794.72x = 8,295,591.18
5. Step 5: Solve for x
   x = 8,295,591.18/2,794.72
6. Step 6: Final answer
   x = 2,968.31