Finding the Fourth Proportional to 2,601.33, 3,902.35 and 845.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.33 : 3,902.35 = 845.77 : x
2. Step 2: Convert to fraction form
   2,601.33/3,902.35 = 845.77/x
3. Step 3: Cross multiply
   2,601.33x = 3,902.35 × 845.77
4. Step 4: Simplify right side
   2,601.33x = 3,300,490.56
5. Step 5: Solve for x
   x = 3,300,490.56/2,601.33
6. Step 6: Final answer
   x = 1,268.77