Finding the Fourth Proportional to 2,590, 3,574.38 and 1,543.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590 : 3,574.38 = 1,543.12 : x
2. Step 2: Convert to fraction form
   2,590/3,574.38 = 1,543.12/x
3. Step 3: Cross multiply
   2,590x = 3,574.38 × 1,543.12
4. Step 4: Simplify right side
   2,590x = 5,515,697.27
5. Step 5: Solve for x
   x = 5,515,697.27/2,590
6. Step 6: Final answer
   x = 2,129.61