Finding the Fourth Proportional to 2,500.35, 3,747.05 and 938.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.35 : 3,747.05 = 938.78 : x
2. Step 2: Convert to fraction form
   2,500.35/3,747.05 = 938.78/x
3. Step 3: Cross multiply
   2,500.35x = 3,747.05 × 938.78
4. Step 4: Simplify right side
   2,500.35x = 3,517,639.21
5. Step 5: Solve for x
   x = 3,517,639.21/2,500.35
6. Step 6: Final answer
   x = 1,406.86