Finding the Fourth Proportional to 2,231.82, 3,078.37 and 1,531.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.82 : 3,078.37 = 1,531.98 : x
2. Step 2: Convert to fraction form
   2,231.82/3,078.37 = 1,531.98/x
3. Step 3: Cross multiply
   2,231.82x = 3,078.37 × 1,531.98
4. Step 4: Simplify right side
   2,231.82x = 4,716,001.27
5. Step 5: Solve for x
   x = 4,716,001.27/2,231.82
6. Step 6: Final answer
   x = 2,113.07