Finding the Fourth Proportional to 2,601.50, 3,901.57 and 752.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.50 : 3,901.57 = 752.20 : x
2. Step 2: Convert to fraction form
   2,601.50/3,901.57 = 752.20/x
3. Step 3: Cross multiply
   2,601.50x = 3,901.57 × 752.20
4. Step 4: Simplify right side
   2,601.50x = 2,934,749.32
5. Step 5: Solve for x
   x = 2,934,749.32/2,601.50
6. Step 6: Final answer
   x = 1,128.10