Finding the Fourth Proportional to 2,647.35, 3,971.19 and 892.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.35 : 3,971.19 = 892.59 : x
2. Step 2: Convert to fraction form
   2,647.35/3,971.19 = 892.59/x
3. Step 3: Cross multiply
   2,647.35x = 3,971.19 × 892.59
4. Step 4: Simplify right side
   2,647.35x = 3,544,632.94
5. Step 5: Solve for x
   x = 3,544,632.94/2,647.35
6. Step 6: Final answer
   x = 1,338.94