Finding the Fourth Proportional to 3,747.78, 5,625.15 and 1,900.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,747.78 : 5,625.15 = 1,900.20 : x
2. Step 2: Convert to fraction form
   3,747.78/5,625.15 = 1,900.20/x
3. Step 3: Cross multiply
   3,747.78x = 5,625.15 × 1,900.20
4. Step 4: Simplify right side
   3,747.78x = 10,688,910.03
5. Step 5: Solve for x
   x = 10,688,910.03/3,747.78
6. Step 6: Final answer
   x = 2,852.06