Finding the Fourth Proportional to 1,483.74, 2,047.35 and 820.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.74 : 2,047.35 = 820.58 : x
2. Step 2: Convert to fraction form
   1,483.74/2,047.35 = 820.58/x
3. Step 3: Cross multiply
   1,483.74x = 2,047.35 × 820.58
4. Step 4: Simplify right side
   1,483.74x = 1,680,016.51
5. Step 5: Solve for x
   x = 1,680,016.51/1,483.74
6. Step 6: Final answer
   x = 1,132.28