Finding the Fourth Proportional to 2,150.83, 3,225.31 and 763.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.83 : 3,225.31 = 763.71 : x
2. Step 2: Convert to fraction form
   2,150.83/3,225.31 = 763.71/x
3. Step 3: Cross multiply
   2,150.83x = 3,225.31 × 763.71
4. Step 4: Simplify right side
   2,150.83x = 2,463,201.50
5. Step 5: Solve for x
   x = 2,463,201.50/2,150.83
6. Step 6: Final answer
   x = 1,145.23