Finding the Fourth Proportional to 2,591.26, 3,572.31 and 2,191.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.26 : 3,572.31 = 2,191.31 : x
2. Step 2: Convert to fraction form
   2,591.26/3,572.31 = 2,191.31/x
3. Step 3: Cross multiply
   2,591.26x = 3,572.31 × 2,191.31
4. Step 4: Simplify right side
   2,591.26x = 7,828,043.09
5. Step 5: Solve for x
   x = 7,828,043.09/2,591.26
6. Step 6: Final answer
   x = 3,020.95