Finding the Fourth Proportional to 2,123.67, 3,181.39 and 1,196.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.67 : 3,181.39 = 1,196.39 : x
2. Step 2: Convert to fraction form
   2,123.67/3,181.39 = 1,196.39/x
3. Step 3: Cross multiply
   2,123.67x = 3,181.39 × 1,196.39
4. Step 4: Simplify right side
   2,123.67x = 3,806,183.18
5. Step 5: Solve for x
   x = 3,806,183.18/2,123.67
6. Step 6: Final answer
   x = 1,792.27