Finding the Fourth Proportional to 4,978.78, 7,469.25 and 1,515.94

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.78 : 7,469.25 = 1,515.94 : x
2. Step 2: Convert to fraction form
   4,978.78/7,469.25 = 1,515.94/x
3. Step 3: Cross multiply
   4,978.78x = 7,469.25 × 1,515.94
4. Step 4: Simplify right side
   4,978.78x = 11,322,916.17
5. Step 5: Solve for x
   x = 11,322,916.17/4,978.78
6. Step 6: Final answer
   x = 2,274.24