Finding the Fourth Proportional to 2,601.02, 3,901.56 and 869.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.02 : 3,901.56 = 869.60 : x
2. Step 2: Convert to fraction form
   2,601.02/3,901.56 = 869.60/x
3. Step 3: Cross multiply
   2,601.02x = 3,901.56 × 869.60
4. Step 4: Simplify right side
   2,601.02x = 3,392,796.58
5. Step 5: Solve for x
   x = 3,392,796.58/2,601.02
6. Step 6: Final answer
   x = 1,304.41