Finding the Fourth Proportional to 1,997.81, 2,758.73 and 1,253.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.81 : 2,758.73 = 1,253.06 : x
2. Step 2: Convert to fraction form
   1,997.81/2,758.73 = 1,253.06/x
3. Step 3: Cross multiply
   1,997.81x = 2,758.73 × 1,253.06
4. Step 4: Simplify right side
   1,997.81x = 3,456,854.21
5. Step 5: Solve for x
   x = 3,456,854.21/1,997.81
6. Step 6: Final answer
   x = 1,730.32