Finding the Fourth Proportional to 2,255.31, 3,381.59 and 1,331.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.31 : 3,381.59 = 1,331.08 : x
2. Step 2: Convert to fraction form
   2,255.31/3,381.59 = 1,331.08/x
3. Step 3: Cross multiply
   2,255.31x = 3,381.59 × 1,331.08
4. Step 4: Simplify right side
   2,255.31x = 4,501,161.69
5. Step 5: Solve for x
   x = 4,501,161.69/2,255.31
6. Step 6: Final answer
   x = 1,995.81