Finding the Fourth Proportional to 2,604.02, 3,907.56 and 961.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.02 : 3,907.56 = 961.72 : x
2. Step 2: Convert to fraction form
   2,604.02/3,907.56 = 961.72/x
3. Step 3: Cross multiply
   2,604.02x = 3,907.56 × 961.72
4. Step 4: Simplify right side
   2,604.02x = 3,757,978.60
5. Step 5: Solve for x
   x = 3,757,978.60/2,604.02
6. Step 6: Final answer
   x = 1,443.15