Finding the Fourth Proportional to 1,426.06, 2,136.35 and 839.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.06 : 2,136.35 = 839.82 : x
2. Step 2: Convert to fraction form
   1,426.06/2,136.35 = 839.82/x
3. Step 3: Cross multiply
   1,426.06x = 2,136.35 × 839.82
4. Step 4: Simplify right side
   1,426.06x = 1,794,149.46
5. Step 5: Solve for x
   x = 1,794,149.46/1,426.06
6. Step 6: Final answer
   x = 1,258.12