Finding the Fourth Proportional to 1,522.58, 2,100.90 and 859.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.58 : 2,100.90 = 859.24 : x
2. Step 2: Convert to fraction form
   1,522.58/2,100.90 = 859.24/x
3. Step 3: Cross multiply
   1,522.58x = 2,100.90 × 859.24
4. Step 4: Simplify right side
   1,522.58x = 1,805,172.06
5. Step 5: Solve for x
   x = 1,805,172.06/1,522.58
6. Step 6: Final answer
   x = 1,185.60