Finding the Fourth Proportional to 2,355.96, 3,531.68 and 1,123.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.96 : 3,531.68 = 1,123.04 : x
2. Step 2: Convert to fraction form
   2,355.96/3,531.68 = 1,123.04/x
3. Step 3: Cross multiply
   2,355.96x = 3,531.68 × 1,123.04
4. Step 4: Simplify right side
   2,355.96x = 3,966,217.91
5. Step 5: Solve for x
   x = 3,966,217.91/2,355.96
6. Step 6: Final answer
   x = 1,683.48