Finding the Fourth Proportional to 2,601.82, 3,903.30 and 847

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.82 : 3,903.30 = 847 : x
2. Step 2: Convert to fraction form
   2,601.82/3,903.30 = 847/x
3. Step 3: Cross multiply
   2,601.82x = 3,903.30 × 847
4. Step 4: Simplify right side
   2,601.82x = 3,306,095.10
5. Step 5: Solve for x
   x = 3,306,095.10/2,601.82
6. Step 6: Final answer
   x = 1,270.69