Finding the Fourth Proportional to 3,689.34, 5,528.72 and 2,748.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.34 : 5,528.72 = 2,748.03 : x
2. Step 2: Convert to fraction form
   3,689.34/5,528.72 = 2,748.03/x
3. Step 3: Cross multiply
   3,689.34x = 5,528.72 × 2,748.03
4. Step 4: Simplify right side
   3,689.34x = 15,193,074.68
5. Step 5: Solve for x
   x = 15,193,074.68/3,689.34
6. Step 6: Final answer
   x = 4,118.10