Finding the Fourth Proportional to 2,601.29, 3,902.32 and 845.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.29 : 3,902.32 = 845.72 : x
2. Step 2: Convert to fraction form
   2,601.29/3,902.32 = 845.72/x
3. Step 3: Cross multiply
   2,601.29x = 3,902.32 × 845.72
4. Step 4: Simplify right side
   2,601.29x = 3,300,270.07
5. Step 5: Solve for x
   x = 3,300,270.07/2,601.29
6. Step 6: Final answer
   x = 1,268.71