Finding the Fourth Proportional to 1,522.15, 2,100.55 and 823.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.15 : 2,100.55 = 823.52 : x
2. Step 2: Convert to fraction form
   1,522.15/2,100.55 = 823.52/x
3. Step 3: Cross multiply
   1,522.15x = 2,100.55 × 823.52
4. Step 4: Simplify right side
   1,522.15x = 1,729,844.94
5. Step 5: Solve for x
   x = 1,729,844.94/1,522.15
6. Step 6: Final answer
   x = 1,136.45