Finding the Fourth Proportional to 2,520.38, 3,478.46 and 1,525.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.38 : 3,478.46 = 1,525.67 : x
2. Step 2: Convert to fraction form
   2,520.38/3,478.46 = 1,525.67/x
3. Step 3: Cross multiply
   2,520.38x = 3,478.46 × 1,525.67
4. Step 4: Simplify right side
   2,520.38x = 5,306,986.91
5. Step 5: Solve for x
   x = 5,306,986.91/2,520.38
6. Step 6: Final answer
   x = 2,105.63