Finding the Fourth Proportional to 3,578.29, 5,367.47 and 1,113.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.29 : 5,367.47 = 1,113.05 : x
2. Step 2: Convert to fraction form
   3,578.29/5,367.47 = 1,113.05/x
3. Step 3: Cross multiply
   3,578.29x = 5,367.47 × 1,113.05
4. Step 4: Simplify right side
   3,578.29x = 5,974,262.48
5. Step 5: Solve for x
   x = 5,974,262.48/3,578.29
6. Step 6: Final answer
   x = 1,669.59