Finding the Fourth Proportional to 2,647.62, 3,971.22 and 892.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.62 : 3,971.22 = 892.59 : x
2. Step 2: Convert to fraction form
   2,647.62/3,971.22 = 892.59/x
3. Step 3: Cross multiply
   2,647.62x = 3,971.22 × 892.59
4. Step 4: Simplify right side
   2,647.62x = 3,544,656.74
5. Step 5: Solve for x
   x = 3,544,656.74/2,647.62
6. Step 6: Final answer
   x = 1,338.81