Finding the Fourth Proportional to 1,522.10, 2,100.49 and 823.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.10 : 2,100.49 = 823.47 : x
2. Step 2: Convert to fraction form
   1,522.10/2,100.49 = 823.47/x
3. Step 3: Cross multiply
   1,522.10x = 2,100.49 × 823.47
4. Step 4: Simplify right side
   1,522.10x = 1,729,690.50
5. Step 5: Solve for x
   x = 1,729,690.50/1,522.10
6. Step 6: Final answer
   x = 1,136.38