Finding the Fourth Proportional to 2,892.78, 4,338.72 and 944.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.78 : 4,338.72 = 944.55 : x
2. Step 2: Convert to fraction form
   2,892.78/4,338.72 = 944.55/x
3. Step 3: Cross multiply
   2,892.78x = 4,338.72 × 944.55
4. Step 4: Simplify right side
   2,892.78x = 4,098,137.98
5. Step 5: Solve for x
   x = 4,098,137.98/2,892.78
6. Step 6: Final answer
   x = 1,416.68