Finding the Fourth Proportional to 1,426.14, 2,137.47 and 810.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.14 : 2,137.47 = 810.37 : x
2. Step 2: Convert to fraction form
   1,426.14/2,137.47 = 810.37/x
3. Step 3: Cross multiply
   1,426.14x = 2,137.47 × 810.37
4. Step 4: Simplify right side
   1,426.14x = 1,732,141.56
5. Step 5: Solve for x
   x = 1,732,141.56/1,426.14
6. Step 6: Final answer
   x = 1,214.57