Finding the Fourth Proportional to 3,647.76, 5,033.52 and 2,155.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647.76 : 5,033.52 = 2,155.74 : x
2. Step 2: Convert to fraction form
   3,647.76/5,033.52 = 2,155.74/x
3. Step 3: Cross multiply
   3,647.76x = 5,033.52 × 2,155.74
4. Step 4: Simplify right side
   3,647.76x = 10,850,960.40
5. Step 5: Solve for x
   x = 10,850,960.40/3,647.76
6. Step 6: Final answer
   x = 2,974.69