Finding the Fourth Proportional to 1,483.56, 2,047.31 and 820.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.56 : 2,047.31 = 820.42 : x
2. Step 2: Convert to fraction form
   1,483.56/2,047.31 = 820.42/x
3. Step 3: Cross multiply
   1,483.56x = 2,047.31 × 820.42
4. Step 4: Simplify right side
   1,483.56x = 1,679,654.07
5. Step 5: Solve for x
   x = 1,679,654.07/1,483.56
6. Step 6: Final answer
   x = 1,132.18