Finding the Fourth Proportional to 2,150.31, 3,225.72 and 763.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.31 : 3,225.72 = 763.35 : x
2. Step 2: Convert to fraction form
   2,150.31/3,225.72 = 763.35/x
3. Step 3: Cross multiply
   2,150.31x = 3,225.72 × 763.35
4. Step 4: Simplify right side
   2,150.31x = 2,462,353.36
5. Step 5: Solve for x
   x = 2,462,353.36/2,150.31
6. Step 6: Final answer
   x = 1,145.12