Finding the Fourth Proportional to 2,715.38, 4,066.89 and 1,728.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.38 : 4,066.89 = 1,728.18 : x
2. Step 2: Convert to fraction form
   2,715.38/4,066.89 = 1,728.18/x
3. Step 3: Cross multiply
   2,715.38x = 4,066.89 × 1,728.18
4. Step 4: Simplify right side
   2,715.38x = 7,028,317.96
5. Step 5: Solve for x
   x = 7,028,317.96/2,715.38
6. Step 6: Final answer
   x = 2,588.34