Finding the Fourth Proportional to 2,179.72, 3,006.66 and 1,351.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.72 : 3,006.66 = 1,351.72 : x
2. Step 2: Convert to fraction form
   2,179.72/3,006.66 = 1,351.72/x
3. Step 3: Cross multiply
   2,179.72x = 3,006.66 × 1,351.72
4. Step 4: Simplify right side
   2,179.72x = 4,064,162.46
5. Step 5: Solve for x
   x = 4,064,162.46/2,179.72
6. Step 6: Final answer
   x = 1,864.53