Finding the Fourth Proportional to 3,581.25, 5,370.50 and 1,389.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,581.25 : 5,370.50 = 1,389.69 : x
2. Step 2: Convert to fraction form
   3,581.25/5,370.50 = 1,389.69/x
3. Step 3: Cross multiply
   3,581.25x = 5,370.50 × 1,389.69
4. Step 4: Simplify right side
   3,581.25x = 7,463,333.62
5. Step 5: Solve for x
   x = 7,463,333.62/3,581.25
6. Step 6: Final answer
   x = 2,084.00