Finding the Fourth Proportional to 2,928.47, 4,394.33 and 1,198.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.47 : 4,394.33 = 1,198.31 : x
2. Step 2: Convert to fraction form
   2,928.47/4,394.33 = 1,198.31/x
3. Step 3: Cross multiply
   2,928.47x = 4,394.33 × 1,198.31
4. Step 4: Simplify right side
   2,928.47x = 5,265,763.59
5. Step 5: Solve for x
   x = 5,265,763.59/2,928.47
6. Step 6: Final answer
   x = 1,798.13