Finding the Fourth Proportional to 2,355.52, 3,533.22 and 1,123.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.52 : 3,533.22 = 1,123.80 : x
2. Step 2: Convert to fraction form
   2,355.52/3,533.22 = 1,123.80/x
3. Step 3: Cross multiply
   2,355.52x = 3,533.22 × 1,123.80
4. Step 4: Simplify right side
   2,355.52x = 3,970,632.64
5. Step 5: Solve for x
   x = 3,970,632.64/2,355.52
6. Step 6: Final answer
   x = 1,685.67