Finding the Fourth Proportional to 3,114.72, 4,647.78 and 2,838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,114.72 : 4,647.78 = 2,838.72 : x
2. Step 2: Convert to fraction form
   3,114.72/4,647.78 = 2,838.72/x
3. Step 3: Cross multiply
   3,114.72x = 4,647.78 × 2,838.72
4. Step 4: Simplify right side
   3,114.72x = 13,193,746.04
5. Step 5: Solve for x
   x = 13,193,746.04/3,114.72
6. Step 6: Final answer
   x = 4,235.93