Finding the Fourth Proportional to 2,388.73, 3,581.22 and 1,155.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.73 : 3,581.22 = 1,155.81 : x
2. Step 2: Convert to fraction form
   2,388.73/3,581.22 = 1,155.81/x
3. Step 3: Cross multiply
   2,388.73x = 3,581.22 × 1,155.81
4. Step 4: Simplify right side
   2,388.73x = 4,139,191.98
5. Step 5: Solve for x
   x = 4,139,191.98/2,388.73
6. Step 6: Final answer
   x = 1,732.80