Finding the Fourth Proportional to 2,069.72, 3,099.10 and 1,515.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.72 : 3,099.10 = 1,515.68 : x
2. Step 2: Convert to fraction form
   2,069.72/3,099.10 = 1,515.68/x
3. Step 3: Cross multiply
   2,069.72x = 3,099.10 × 1,515.68
4. Step 4: Simplify right side
   2,069.72x = 4,697,243.89
5. Step 5: Solve for x
   x = 4,697,243.89/2,069.72
6. Step 6: Final answer
   x = 2,269.51