Finding the Fourth Proportional to 3,527.57, 5,288.69 and 2,140.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,527.57 : 5,288.69 = 2,140.58 : x
2. Step 2: Convert to fraction form
   3,527.57/5,288.69 = 2,140.58/x
3. Step 3: Cross multiply
   3,527.57x = 5,288.69 × 2,140.58
4. Step 4: Simplify right side
   3,527.57x = 11,320,826.89
5. Step 5: Solve for x
   x = 11,320,826.89/3,527.57
6. Step 6: Final answer
   x = 3,209.25