Finding the Fourth Proportional to 2,046.56, 3,069.90 and 892.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,046.56 : 3,069.90 = 892.40 : x
2. Step 2: Convert to fraction form
   2,046.56/3,069.90 = 892.40/x
3. Step 3: Cross multiply
   2,046.56x = 3,069.90 × 892.40
4. Step 4: Simplify right side
   2,046.56x = 2,739,578.76
5. Step 5: Solve for x
   x = 2,739,578.76/2,046.56
6. Step 6: Final answer
   x = 1,338.63