Finding the Fourth Proportional to 1,945.72, 2,684.33 and 1,198.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.72 : 2,684.33 = 1,198.38 : x
2. Step 2: Convert to fraction form
   1,945.72/2,684.33 = 1,198.38/x
3. Step 3: Cross multiply
   1,945.72x = 2,684.33 × 1,198.38
4. Step 4: Simplify right side
   1,945.72x = 3,216,847.39
5. Step 5: Solve for x
   x = 3,216,847.39/1,945.72
6. Step 6: Final answer
   x = 1,653.29