Finding the Fourth Proportional to 3,338.89, 5,007.31 and 1,147.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,338.89 : 5,007.31 = 1,147.12 : x
2. Step 2: Convert to fraction form
   3,338.89/5,007.31 = 1,147.12/x
3. Step 3: Cross multiply
   3,338.89x = 5,007.31 × 1,147.12
4. Step 4: Simplify right side
   3,338.89x = 5,743,985.45
5. Step 5: Solve for x
   x = 5,743,985.45/3,338.89
6. Step 6: Final answer
   x = 1,720.33