Finding the Fourth Proportional to 2,742.57, 4,111.79 and 892.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.57 : 4,111.79 = 892.58 : x
2. Step 2: Convert to fraction form
   2,742.57/4,111.79 = 892.58/x
3. Step 3: Cross multiply
   2,742.57x = 4,111.79 × 892.58
4. Step 4: Simplify right side
   2,742.57x = 3,670,101.52
5. Step 5: Solve for x
   x = 3,670,101.52/2,742.57
6. Step 6: Final answer
   x = 1,338.20