Finding the Fourth Proportional to 1,426.98, 2,136.42 and 938.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.98 : 2,136.42 = 938.56 : x
2. Step 2: Convert to fraction form
   1,426.98/2,136.42 = 938.56/x
3. Step 3: Cross multiply
   1,426.98x = 2,136.42 × 938.56
4. Step 4: Simplify right side
   1,426.98x = 2,005,158.36
5. Step 5: Solve for x
   x = 2,005,158.36/1,426.98
6. Step 6: Final answer
   x = 1,405.18