Finding the Fourth Proportional to 3,748.21, 5,172.49 and 2,069.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,748.21 : 5,172.49 = 2,069.69 : x
2. Step 2: Convert to fraction form
   3,748.21/5,172.49 = 2,069.69/x
3. Step 3: Cross multiply
   3,748.21x = 5,172.49 × 2,069.69
4. Step 4: Simplify right side
   3,748.21x = 10,705,419.79
5. Step 5: Solve for x
   x = 10,705,419.79/3,748.21
6. Step 6: Final answer
   x = 2,856.14