Finding the Fourth Proportional to 2,601.36, 3,901.16 and 869.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.36 : 3,901.16 = 869.52 : x
2. Step 2: Convert to fraction form
   2,601.36/3,901.16 = 869.52/x
3. Step 3: Cross multiply
   2,601.36x = 3,901.16 × 869.52
4. Step 4: Simplify right side
   2,601.36x = 3,392,136.64
5. Step 5: Solve for x
   x = 3,392,136.64/2,601.36
6. Step 6: Final answer
   x = 1,303.99