Finding the Fourth Proportional to 1,426.82, 1,968.93 and 837.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.82 : 1,968.93 = 837.31 : x
2. Step 2: Convert to fraction form
   1,426.82/1,968.93 = 837.31/x
3. Step 3: Cross multiply
   1,426.82x = 1,968.93 × 837.31
4. Step 4: Simplify right side
   1,426.82x = 1,648,604.78
5. Step 5: Solve for x
   x = 1,648,604.78/1,426.82
6. Step 6: Final answer
   x = 1,155.44