Finding the Fourth Proportional to 2,426.70, 3,348.72 and 1,378.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.70 : 3,348.72 = 1,378.74 : x
2. Step 2: Convert to fraction form
   2,426.70/3,348.72 = 1,378.74/x
3. Step 3: Cross multiply
   2,426.70x = 3,348.72 × 1,378.74
4. Step 4: Simplify right side
   2,426.70x = 4,617,014.21
5. Step 5: Solve for x
   x = 4,617,014.21/2,426.70
6. Step 6: Final answer
   x = 1,902.59