Finding the Fourth Proportional to 2,236.47, 3,355.31 and 1,591.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.47 : 3,355.31 = 1,591.30 : x
2. Step 2: Convert to fraction form
   2,236.47/3,355.31 = 1,591.30/x
3. Step 3: Cross multiply
   2,236.47x = 3,355.31 × 1,591.30
4. Step 4: Simplify right side
   2,236.47x = 5,339,304.80
5. Step 5: Solve for x
   x = 5,339,304.80/2,236.47
6. Step 6: Final answer
   x = 2,387.38