Finding the Fourth Proportional to 2,123.47, 3,180.60 and 1,198.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.47 : 3,180.60 = 1,198.54 : x
2. Step 2: Convert to fraction form
   2,123.47/3,180.60 = 1,198.54/x
3. Step 3: Cross multiply
   2,123.47x = 3,180.60 × 1,198.54
4. Step 4: Simplify right side
   2,123.47x = 3,812,076.32
5. Step 5: Solve for x
   x = 3,812,076.32/2,123.47
6. Step 6: Final answer
   x = 1,795.21