Finding the Fourth Proportional to 2,543.56, 3,507.34 and 2,209.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.56 : 3,507.34 = 2,209.12 : x
2. Step 2: Convert to fraction form
   2,543.56/3,507.34 = 2,209.12/x
3. Step 3: Cross multiply
   2,543.56x = 3,507.34 × 2,209.12
4. Step 4: Simplify right side
   2,543.56x = 7,748,134.94
5. Step 5: Solve for x
   x = 7,748,134.94/2,543.56
6. Step 6: Final answer
   x = 3,046.18