Finding the Fourth Proportional to 1,426.59, 2,138.67 and 848.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.59 : 2,138.67 = 848.25 : x
2. Step 2: Convert to fraction form
   1,426.59/2,138.67 = 848.25/x
3. Step 3: Cross multiply
   1,426.59x = 2,138.67 × 848.25
4. Step 4: Simplify right side
   1,426.59x = 1,814,126.83
5. Step 5: Solve for x
   x = 1,814,126.83/1,426.59
6. Step 6: Final answer
   x = 1,271.65