Finding the Fourth Proportional to 1,426.31, 1,966.76 and 1,238.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.31 : 1,966.76 = 1,238.19 : x
2. Step 2: Convert to fraction form
   1,426.31/1,966.76 = 1,238.19/x
3. Step 3: Cross multiply
   1,426.31x = 1,966.76 × 1,238.19
4. Step 4: Simplify right side
   1,426.31x = 2,435,222.56
5. Step 5: Solve for x
   x = 2,435,222.56/1,426.31
6. Step 6: Final answer
   x = 1,707.36