Finding the Fourth Proportional to 2,388.71, 3,581.58 and 927.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.71 : 3,581.58 = 927.53 : x
2. Step 2: Convert to fraction form
   2,388.71/3,581.58 = 927.53/x
3. Step 3: Cross multiply
   2,388.71x = 3,581.58 × 927.53
4. Step 4: Simplify right side
   2,388.71x = 3,322,022.90
5. Step 5: Solve for x
   x = 3,322,022.90/2,388.71
6. Step 6: Final answer
   x = 1,390.72