Finding the Fourth Proportional to 2,293.35, 3,440.64 and 1,123.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,293.35 : 3,440.64 = 1,123.30 : x
2. Step 2: Convert to fraction form
   2,293.35/3,440.64 = 1,123.30/x
3. Step 3: Cross multiply
   2,293.35x = 3,440.64 × 1,123.30
4. Step 4: Simplify right side
   2,293.35x = 3,864,879.43
5. Step 5: Solve for x
   x = 3,864,879.43/2,293.35
6. Step 6: Final answer
   x = 1,685.26