Finding the Fourth Proportional to 2,820.29, 3,889.45 and 1,824.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.29 : 3,889.45 = 1,824.53 : x
2. Step 2: Convert to fraction form
   2,820.29/3,889.45 = 1,824.53/x
3. Step 3: Cross multiply
   2,820.29x = 3,889.45 × 1,824.53
4. Step 4: Simplify right side
   2,820.29x = 7,096,401.04
5. Step 5: Solve for x
   x = 7,096,401.04/2,820.29
6. Step 6: Final answer
   x = 2,516.20