Finding the Fourth Proportional to 1,487.05, 2,052.12 and 823.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.05 : 2,052.12 = 823.89 : x
2. Step 2: Convert to fraction form
   1,487.05/2,052.12 = 823.89/x
3. Step 3: Cross multiply
   1,487.05x = 2,052.12 × 823.89
4. Step 4: Simplify right side
   1,487.05x = 1,690,721.15
5. Step 5: Solve for x
   x = 1,690,721.15/1,487.05
6. Step 6: Final answer
   x = 1,136.96