Finding the Fourth Proportional to 3,680.33, 5,518.76 and 1,338.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.33 : 5,518.76 = 1,338.69 : x
2. Step 2: Convert to fraction form
   3,680.33/5,518.76 = 1,338.69/x
3. Step 3: Cross multiply
   3,680.33x = 5,518.76 × 1,338.69
4. Step 4: Simplify right side
   3,680.33x = 7,387,908.82
5. Step 5: Solve for x
   x = 7,387,908.82/3,680.33
6. Step 6: Final answer
   x = 2,007.40