Finding the Fourth Proportional to 2,426.58, 3,348.90 and 1,378.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.58 : 3,348.90 = 1,378.98 : x
2. Step 2: Convert to fraction form
   2,426.58/3,348.90 = 1,378.98/x
3. Step 3: Cross multiply
   2,426.58x = 3,348.90 × 1,378.98
4. Step 4: Simplify right side
   2,426.58x = 4,618,066.12
5. Step 5: Solve for x
   x = 4,618,066.12/2,426.58
6. Step 6: Final answer
   x = 1,903.12