Finding the Fourth Proportional to 3,748.63, 5,618.22 and 1,900.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,748.63 : 5,618.22 = 1,900.21 : x
2. Step 2: Convert to fraction form
   3,748.63/5,618.22 = 1,900.21/x
3. Step 3: Cross multiply
   3,748.63x = 5,618.22 × 1,900.21
4. Step 4: Simplify right side
   3,748.63x = 10,675,797.83
5. Step 5: Solve for x
   x = 10,675,797.83/3,748.63
6. Step 6: Final answer
   x = 2,847.92