Finding the Fourth Proportional to 3,338.55, 5,008.65 and 1,147.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,338.55 : 5,008.65 = 1,147.31 : x
2. Step 2: Convert to fraction form
   3,338.55/5,008.65 = 1,147.31/x
3. Step 3: Cross multiply
   3,338.55x = 5,008.65 × 1,147.31
4. Step 4: Simplify right side
   3,338.55x = 5,746,468.49
5. Step 5: Solve for x
   x = 5,746,468.49/3,338.55
6. Step 6: Final answer
   x = 1,721.25