Finding the Fourth Proportional to 2,601.40, 3,902.46 and 845.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.40 : 3,902.46 = 845.83 : x
2. Step 2: Convert to fraction form
   2,601.40/3,902.46 = 845.83/x
3. Step 3: Cross multiply
   2,601.40x = 3,902.46 × 845.83
4. Step 4: Simplify right side
   2,601.40x = 3,300,817.74
5. Step 5: Solve for x
   x = 3,300,817.74/2,601.40
6. Step 6: Final answer
   x = 1,268.86