Finding the Fourth Proportional to 2,426.67, 3,348.81 and 1,378.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.67 : 3,348.81 = 1,378.80 : x
2. Step 2: Convert to fraction form
   2,426.67/3,348.81 = 1,378.80/x
3. Step 3: Cross multiply
   2,426.67x = 3,348.81 × 1,378.80
4. Step 4: Simplify right side
   2,426.67x = 4,617,339.23
5. Step 5: Solve for x
   x = 4,617,339.23/2,426.67
6. Step 6: Final answer
   x = 1,902.75