Finding the Fourth Proportional to 2,053.52, 3,079.92 and 820.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.52 : 3,079.92 = 820.59 : x
2. Step 2: Convert to fraction form
   2,053.52/3,079.92 = 820.59/x
3. Step 3: Cross multiply
   2,053.52x = 3,079.92 × 820.59
4. Step 4: Simplify right side
   2,053.52x = 2,527,351.55
5. Step 5: Solve for x
   x = 2,527,351.55/2,053.52
6. Step 6: Final answer
   x = 1,230.74