Finding the Fourth Proportional to 1,426.38, 2,137.81 and 1,013.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.38 : 2,137.81 = 1,013.28 : x
2. Step 2: Convert to fraction form
   1,426.38/2,137.81 = 1,013.28/x
3. Step 3: Cross multiply
   1,426.38x = 2,137.81 × 1,013.28
4. Step 4: Simplify right side
   1,426.38x = 2,166,200.12
5. Step 5: Solve for x
   x = 2,166,200.12/1,426.38
6. Step 6: Final answer
   x = 1,518.67