Finding the Fourth Proportional to 1,483.90, 2,047.61 and 820.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.90 : 2,047.61 = 820.59 : x
2. Step 2: Convert to fraction form
   1,483.90/2,047.61 = 820.59/x
3. Step 3: Cross multiply
   1,483.90x = 2,047.61 × 820.59
4. Step 4: Simplify right side
   1,483.90x = 1,680,248.29
5. Step 5: Solve for x
   x = 1,680,248.29/1,483.90
6. Step 6: Final answer
   x = 1,132.32