Finding the Fourth Proportional to 2,328.77, 3,212.07 and 1,581.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.77 : 3,212.07 = 1,581.43 : x
2. Step 2: Convert to fraction form
   2,328.77/3,212.07 = 1,581.43/x
3. Step 3: Cross multiply
   2,328.77x = 3,212.07 × 1,581.43
4. Step 4: Simplify right side
   2,328.77x = 5,079,651.34
5. Step 5: Solve for x
   x = 5,079,651.34/2,328.77
6. Step 6: Final answer
   x = 2,181.26