Finding the Fourth Proportional to 1,483.85, 2,047.72 and 820.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.85 : 2,047.72 = 820.71 : x
2. Step 2: Convert to fraction form
   1,483.85/2,047.72 = 820.71/x
3. Step 3: Cross multiply
   1,483.85x = 2,047.72 × 820.71
4. Step 4: Simplify right side
   1,483.85x = 1,680,577.11
5. Step 5: Solve for x
   x = 1,680,577.11/1,483.85
6. Step 6: Final answer
   x = 1,132.58