Finding the Fourth Proportional to 1,727.72, 2,586.78 and 1,343.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,727.72 : 2,586.78 = 1,343.72 : x
2. Step 2: Convert to fraction form
   1,727.72/2,586.78 = 1,343.72/x
3. Step 3: Cross multiply
   1,727.72x = 2,586.78 × 1,343.72
4. Step 4: Simplify right side
   1,727.72x = 3,475,908.02
5. Step 5: Solve for x
   x = 3,475,908.02/1,727.72
6. Step 6: Final answer
   x = 2,011.85