Finding the Fourth Proportional to 2,426.50, 3,348.55 and 1,378.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.50 : 3,348.55 = 1,378.56 : x
2. Step 2: Convert to fraction form
   2,426.50/3,348.55 = 1,378.56/x
3. Step 3: Cross multiply
   2,426.50x = 3,348.55 × 1,378.56
4. Step 4: Simplify right side
   2,426.50x = 4,616,173.64
5. Step 5: Solve for x
   x = 4,616,173.64/2,426.50
6. Step 6: Final answer
   x = 1,902.40