Finding the Fourth Proportional to 2,498.93, 3,748.49 and 938.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.93 : 3,748.49 = 938.78 : x
2. Step 2: Convert to fraction form
   2,498.93/3,748.49 = 938.78/x
3. Step 3: Cross multiply
   2,498.93x = 3,748.49 × 938.78
4. Step 4: Simplify right side
   2,498.93x = 3,519,007.44
5. Step 5: Solve for x
   x = 3,519,007.44/2,498.93
6. Step 6: Final answer
   x = 1,408.21