Finding the Fourth Proportional to 2,231.31, 3,077.68 and 1,531.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.31 : 3,077.68 = 1,531.47 : x
2. Step 2: Convert to fraction form
   2,231.31/3,077.68 = 1,531.47/x
3. Step 3: Cross multiply
   2,231.31x = 3,077.68 × 1,531.47
4. Step 4: Simplify right side
   2,231.31x = 4,713,374.59
5. Step 5: Solve for x
   x = 4,713,374.59/2,231.31
6. Step 6: Final answer
   x = 2,112.38