Finding the Fourth Proportional to 1,522.48, 2,100.78 and 859.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.48 : 2,100.78 = 859.32 : x
2. Step 2: Convert to fraction form
   1,522.48/2,100.78 = 859.32/x
3. Step 3: Cross multiply
   1,522.48x = 2,100.78 × 859.32
4. Step 4: Simplify right side
   1,522.48x = 1,805,242.27
5. Step 5: Solve for x
   x = 1,805,242.27/1,522.48
6. Step 6: Final answer
   x = 1,185.72