Finding the Fourth Proportional to 1,522.59, 2,101.05 and 859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.59 : 2,101.05 = 859.50 : x
2. Step 2: Convert to fraction form
   1,522.59/2,101.05 = 859.50/x
3. Step 3: Cross multiply
   1,522.59x = 2,101.05 × 859.50
4. Step 4: Simplify right side
   1,522.59x = 1,805,852.48
5. Step 5: Solve for x
   x = 1,805,852.48/1,522.59
6. Step 6: Final answer
   x = 1,186.04