Finding the Fourth Proportional to 1,522.65, 2,101.06 and 859.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.65 : 2,101.06 = 859.38 : x
2. Step 2: Convert to fraction form
   1,522.65/2,101.06 = 859.38/x
3. Step 3: Cross multiply
   1,522.65x = 2,101.06 × 859.38
4. Step 4: Simplify right side
   1,522.65x = 1,805,608.94
5. Step 5: Solve for x
   x = 1,805,608.94/1,522.65
6. Step 6: Final answer
   x = 1,185.83