Finding the Fourth Proportional to 2,543.30, 3,509.81 and 1,424.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543.30 : 3,509.81 = 1,424.32 : x
2. Step 2: Convert to fraction form
   2,543.30/3,509.81 = 1,424.32/x
3. Step 3: Cross multiply
   2,543.30x = 3,509.81 × 1,424.32
4. Step 4: Simplify right side
   2,543.30x = 4,999,082.02
5. Step 5: Solve for x
   x = 4,999,082.02/2,543.30
6. Step 6: Final answer
   x = 1,965.59