Finding the Fourth Proportional to 2,820.52, 4,224.51 and 1,996.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.52 : 4,224.51 = 1,996.30 : x
2. Step 2: Convert to fraction form
   2,820.52/4,224.51 = 1,996.30/x
3. Step 3: Cross multiply
   2,820.52x = 4,224.51 × 1,996.30
4. Step 4: Simplify right side
   2,820.52x = 8,433,389.31
5. Step 5: Solve for x
   x = 8,433,389.31/2,820.52
6. Step 6: Final answer
   x = 2,990.01