Finding the Fourth Proportional to 2,209.52, 3,311.94 and 892.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.52 : 3,311.94 = 892.91 : x
2. Step 2: Convert to fraction form
   2,209.52/3,311.94 = 892.91/x
3. Step 3: Cross multiply
   2,209.52x = 3,311.94 × 892.91
4. Step 4: Simplify right side
   2,209.52x = 2,957,264.35
5. Step 5: Solve for x
   x = 2,957,264.35/2,209.52
6. Step 6: Final answer
   x = 1,338.42