Finding the Fourth Proportional to 3,902.89, 5,385.37 and 2,224.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.89 : 5,385.37 = 2,224.33 : x
2. Step 2: Convert to fraction form
   3,902.89/5,385.37 = 2,224.33/x
3. Step 3: Cross multiply
   3,902.89x = 5,385.37 × 2,224.33
4. Step 4: Simplify right side
   3,902.89x = 11,978,842.39
5. Step 5: Solve for x
   x = 11,978,842.39/3,902.89
6. Step 6: Final answer
   x = 3,069.22