Finding the Fourth Proportional to 2,179.72, 3,264.36 and 1,356.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.72 : 3,264.36 = 1,356.56 : x
2. Step 2: Convert to fraction form
   2,179.72/3,264.36 = 1,356.56/x
3. Step 3: Cross multiply
   2,179.72x = 3,264.36 × 1,356.56
4. Step 4: Simplify right side
   2,179.72x = 4,428,300.20
5. Step 5: Solve for x
   x = 4,428,300.20/2,179.72
6. Step 6: Final answer
   x = 2,031.59