Finding the Fourth Proportional to 2,223.71, 3,338.63 and 1,128.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.71 : 3,338.63 = 1,128.83 : x
2. Step 2: Convert to fraction form
   2,223.71/3,338.63 = 1,128.83/x
3. Step 3: Cross multiply
   2,223.71x = 3,338.63 × 1,128.83
4. Step 4: Simplify right side
   2,223.71x = 3,768,745.70
5. Step 5: Solve for x
   x = 3,768,745.70/2,223.71
6. Step 6: Final answer
   x = 1,694.80