Finding the Fourth Proportional to 2,209.38, 3,312.18 and 892.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.38 : 3,312.18 = 892.32 : x
2. Step 2: Convert to fraction form
   2,209.38/3,312.18 = 892.32/x
3. Step 3: Cross multiply
   2,209.38x = 3,312.18 × 892.32
4. Step 4: Simplify right side
   2,209.38x = 2,955,524.46
5. Step 5: Solve for x
   x = 2,955,524.46/2,209.38
6. Step 6: Final answer
   x = 1,337.72