Finding the Fourth Proportional to 1,522.28, 2,100.71 and 859.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.28 : 2,100.71 = 859.11 : x
2. Step 2: Convert to fraction form
   1,522.28/2,100.71 = 859.11/x
3. Step 3: Cross multiply
   1,522.28x = 2,100.71 × 859.11
4. Step 4: Simplify right side
   1,522.28x = 1,804,740.97
5. Step 5: Solve for x
   x = 1,804,740.97/1,522.28
6. Step 6: Final answer
   x = 1,185.55