Finding the Fourth Proportional to 2,389.50, 3,298.50 and 1,581.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.50 : 3,298.50 = 1,581.93 : x
2. Step 2: Convert to fraction form
   2,389.50/3,298.50 = 1,581.93/x
3. Step 3: Cross multiply
   2,389.50x = 3,298.50 × 1,581.93
4. Step 4: Simplify right side
   2,389.50x = 5,217,996.11
5. Step 5: Solve for x
   x = 5,217,996.11/2,389.50
6. Step 6: Final answer
   x = 2,183.72