Finding the Fourth Proportional to 1,483.71, 2,047.49 and 820.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.71 : 2,047.49 = 820.55 : x
2. Step 2: Convert to fraction form
   1,483.71/2,047.49 = 820.55/x
3. Step 3: Cross multiply
   1,483.71x = 2,047.49 × 820.55
4. Step 4: Simplify right side
   1,483.71x = 1,680,057.68
5. Step 5: Solve for x
   x = 1,680,057.68/1,483.71
6. Step 6: Final answer
   x = 1,132.34