Finding the Fourth Proportional to 2,150.36, 3,225.56 and 763.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.36 : 3,225.56 = 763.72 : x
2. Step 2: Convert to fraction form
   2,150.36/3,225.56 = 763.72/x
3. Step 3: Cross multiply
   2,150.36x = 3,225.56 × 763.72
4. Step 4: Simplify right side
   2,150.36x = 2,463,424.68
5. Step 5: Solve for x
   x = 2,463,424.68/2,150.36
6. Step 6: Final answer
   x = 1,145.59