Finding the Fourth Proportional to 2,472.28, 3,709.78 and 1,011.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.28 : 3,709.78 = 1,011.33 : x
2. Step 2: Convert to fraction form
   2,472.28/3,709.78 = 1,011.33/x
3. Step 3: Cross multiply
   2,472.28x = 3,709.78 × 1,011.33
4. Step 4: Simplify right side
   2,472.28x = 3,751,809.28
5. Step 5: Solve for x
   x = 3,751,809.28/2,472.28
6. Step 6: Final answer
   x = 1,517.55