Finding the Fourth Proportional to 2,123.80, 3,181.58 and 1,196.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.80 : 3,181.58 = 1,196.52 : x
2. Step 2: Convert to fraction form
   2,123.80/3,181.58 = 1,196.52/x
3. Step 3: Cross multiply
   2,123.80x = 3,181.58 × 1,196.52
4. Step 4: Simplify right side
   2,123.80x = 3,806,824.10
5. Step 5: Solve for x
   x = 3,806,824.10/2,123.80
6. Step 6: Final answer
   x = 1,792.46