Finding the Fourth Proportional to 1,522.57, 2,101.08 and 859.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.57 : 2,101.08 = 859.42 : x
2. Step 2: Convert to fraction form
   1,522.57/2,101.08 = 859.42/x
3. Step 3: Cross multiply
   1,522.57x = 2,101.08 × 859.42
4. Step 4: Simplify right side
   1,522.57x = 1,805,710.17
5. Step 5: Solve for x
   x = 1,805,710.17/1,522.57
6. Step 6: Final answer
   x = 1,185.96