Finding the Fourth Proportional to 2,601.78, 3,903.08 and 846.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.78 : 3,903.08 = 846.37 : x
2. Step 2: Convert to fraction form
   2,601.78/3,903.08 = 846.37/x
3. Step 3: Cross multiply
   2,601.78x = 3,903.08 × 846.37
4. Step 4: Simplify right side
   2,601.78x = 3,303,453.64
5. Step 5: Solve for x
   x = 3,303,453.64/2,601.78
6. Step 6: Final answer
   x = 1,269.69