Finding the Fourth Proportional to 3,513.07, 4,850.28 and 2,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,513.07 : 4,850.28 = 2,188.72 : x
2. Step 2: Convert to fraction form
   3,513.07/4,850.28 = 2,188.72/x
3. Step 3: Cross multiply
   3,513.07x = 4,850.28 × 2,188.72
4. Step 4: Simplify right side
   3,513.07x = 10,615,910.90
5. Step 5: Solve for x
   x = 10,615,910.90/3,513.07
6. Step 6: Final answer
   x = 3,021.83