Finding the Fourth Proportional to 2,600.82, 3,900.77 and 847.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.82 : 3,900.77 = 847.07 : x
2. Step 2: Convert to fraction form
   2,600.82/3,900.77 = 847.07/x
3. Step 3: Cross multiply
   2,600.82x = 3,900.77 × 847.07
4. Step 4: Simplify right side
   2,600.82x = 3,304,201.50
5. Step 5: Solve for x
   x = 3,304,201.50/2,600.82
6. Step 6: Final answer
   x = 1,270.45