Finding the Fourth Proportional to 2,972.72, 4,458.98 and 892.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,972.72 : 4,458.98 = 892.76 : x
2. Step 2: Convert to fraction form
   2,972.72/4,458.98 = 892.76/x
3. Step 3: Cross multiply
   2,972.72x = 4,458.98 × 892.76
4. Step 4: Simplify right side
   2,972.72x = 3,980,798.98
5. Step 5: Solve for x
   x = 3,980,798.98/2,972.72
6. Step 6: Final answer
   x = 1,339.11