Finding the Fourth Proportional to 3,786.72, 5,675.13 and 1,938.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.72 : 5,675.13 = 1,938.30 : x
2. Step 2: Convert to fraction form
   3,786.72/5,675.13 = 1,938.30/x
3. Step 3: Cross multiply
   3,786.72x = 5,675.13 × 1,938.30
4. Step 4: Simplify right side
   3,786.72x = 11,000,104.48
5. Step 5: Solve for x
   x = 11,000,104.48/3,786.72
6. Step 6: Final answer
   x = 2,904.92