Finding the Fourth Proportional to 3,580.92, 5,372.15 and 1,115.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,580.92 : 5,372.15 = 1,115.69 : x
2. Step 2: Convert to fraction form
   3,580.92/5,372.15 = 1,115.69/x
3. Step 3: Cross multiply
   3,580.92x = 5,372.15 × 1,115.69
4. Step 4: Simplify right side
   3,580.92x = 5,993,621.59
5. Step 5: Solve for x
   x = 5,993,621.59/3,580.92
6. Step 6: Final answer
   x = 1,673.77