Finding the Fourth Proportional to 1,730.38, 2,387.89 and 1,057.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,730.38 : 2,387.89 = 1,057.97 : x
2. Step 2: Convert to fraction form
   1,730.38/2,387.89 = 1,057.97/x
3. Step 3: Cross multiply
   1,730.38x = 2,387.89 × 1,057.97
4. Step 4: Simplify right side
   1,730.38x = 2,526,315.98
5. Step 5: Solve for x
   x = 2,526,315.98/1,730.38
6. Step 6: Final answer
   x = 1,459.98