Finding the Fourth Proportional to 2,972.42, 4,458.87 and 892.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,972.42 : 4,458.87 = 892.28 : x
2. Step 2: Convert to fraction form
   2,972.42/4,458.87 = 892.28/x
3. Step 3: Cross multiply
   2,972.42x = 4,458.87 × 892.28
4. Step 4: Simplify right side
   2,972.42x = 3,978,560.52
5. Step 5: Solve for x
   x = 3,978,560.52/2,972.42
6. Step 6: Final answer
   x = 1,338.49