Finding the Fourth Proportional to 2,928.03, 4,391.37 and 847.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.03 : 4,391.37 = 847.58 : x
2. Step 2: Convert to fraction form
   2,928.03/4,391.37 = 847.58/x
3. Step 3: Cross multiply
   2,928.03x = 4,391.37 × 847.58
4. Step 4: Simplify right side
   2,928.03x = 3,722,015.43
5. Step 5: Solve for x
   x = 3,722,015.43/2,928.03
6. Step 6: Final answer
   x = 1,271.17