Finding the Fourth Proportional to 2,007.56, 3,024.72 and 1,812.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.56 : 3,024.72 = 1,812.78 : x
2. Step 2: Convert to fraction form
   2,007.56/3,024.72 = 1,812.78/x
3. Step 3: Cross multiply
   2,007.56x = 3,024.72 × 1,812.78
4. Step 4: Simplify right side
   2,007.56x = 5,483,151.92
5. Step 5: Solve for x
   x = 5,483,151.92/2,007.56
6. Step 6: Final answer
   x = 2,731.25