Finding the Fourth Proportional to 1,484.05, 2,047.89 and 820.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.05 : 2,047.89 = 820.90 : x
2. Step 2: Convert to fraction form
   1,484.05/2,047.89 = 820.90/x
3. Step 3: Cross multiply
   1,484.05x = 2,047.89 × 820.90
4. Step 4: Simplify right side
   1,484.05x = 1,681,112.90
5. Step 5: Solve for x
   x = 1,681,112.90/1,484.05
6. Step 6: Final answer
   x = 1,132.79