Finding the Fourth Proportional to 1,483.93, 2,047.72 and 820.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.93 : 2,047.72 = 820.81 : x
2. Step 2: Convert to fraction form
   1,483.93/2,047.72 = 820.81/x
3. Step 3: Cross multiply
   1,483.93x = 2,047.72 × 820.81
4. Step 4: Simplify right side
   1,483.93x = 1,680,789.05
5. Step 5: Solve for x
   x = 1,680,789.05/1,483.93
6. Step 6: Final answer
   x = 1,132.66