Finding the Fourth Proportional to 2,227.12, 3,335.49 and 1,128.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.12 : 3,335.49 = 1,128.82 : x
2. Step 2: Convert to fraction form
   2,227.12/3,335.49 = 1,128.82/x
3. Step 3: Cross multiply
   2,227.12x = 3,335.49 × 1,128.82
4. Step 4: Simplify right side
   2,227.12x = 3,765,167.82
5. Step 5: Solve for x
   x = 3,765,167.82/2,227.12
6. Step 6: Final answer
   x = 1,690.60