Finding the Fourth Proportional to 4,978.72, 7,469.34 and 1,516

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.72 : 7,469.34 = 1,516 : x
2. Step 2: Convert to fraction form
   4,978.72/7,469.34 = 1,516/x
3. Step 3: Cross multiply
   4,978.72x = 7,469.34 × 1,516
4. Step 4: Simplify right side
   4,978.72x = 11,323,519.44
5. Step 5: Solve for x
   x = 11,323,519.44/4,978.72
6. Step 6: Final answer
   x = 2,274.38