Finding the Fourth Proportional to 1,727.91, 2,579.31 and 1,520.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,727.91 : 2,579.31 = 1,520.34 : x
2. Step 2: Convert to fraction form
   1,727.91/2,579.31 = 1,520.34/x
3. Step 3: Cross multiply
   1,727.91x = 2,579.31 × 1,520.34
4. Step 4: Simplify right side
   1,727.91x = 3,921,428.17
5. Step 5: Solve for x
   x = 3,921,428.17/1,727.91
6. Step 6: Final answer
   x = 2,269.46