Finding the Fourth Proportional to 2,647.25, 3,984.18 and 1,992.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.25 : 3,984.18 = 1,992.52 : x
2. Step 2: Convert to fraction form
   2,647.25/3,984.18 = 1,992.52/x
3. Step 3: Cross multiply
   2,647.25x = 3,984.18 × 1,992.52
4. Step 4: Simplify right side
   2,647.25x = 7,938,548.37
5. Step 5: Solve for x
   x = 7,938,548.37/2,647.25
6. Step 6: Final answer
   x = 2,998.79