Finding the Fourth Proportional to 1,522.89, 2,101.41 and 859.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.89 : 2,101.41 = 859.70 : x
2. Step 2: Convert to fraction form
   1,522.89/2,101.41 = 859.70/x
3. Step 3: Cross multiply
   1,522.89x = 2,101.41 × 859.70
4. Step 4: Simplify right side
   1,522.89x = 1,806,587.43
5. Step 5: Solve for x
   x = 1,806,587.43/1,522.89
6. Step 6: Final answer
   x = 1,186.29