Finding the Fourth Proportional to 2,510.39, 3,765.89 and 867.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.39 : 3,765.89 = 867.31 : x
2. Step 2: Convert to fraction form
   2,510.39/3,765.89 = 867.31/x
3. Step 3: Cross multiply
   2,510.39x = 3,765.89 × 867.31
4. Step 4: Simplify right side
   2,510.39x = 3,266,194.06
5. Step 5: Solve for x
   x = 3,266,194.06/2,510.39
6. Step 6: Final answer
   x = 1,301.07