Finding the Fourth Proportional to 1,426.86, 2,136.96 and 938.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.86 : 2,136.96 = 938.52 : x
2. Step 2: Convert to fraction form
   1,426.86/2,136.96 = 938.52/x
3. Step 3: Cross multiply
   1,426.86x = 2,136.96 × 938.52
4. Step 4: Simplify right side
   1,426.86x = 2,005,579.70
5. Step 5: Solve for x
   x = 2,005,579.70/1,426.86
6. Step 6: Final answer
   x = 1,405.59