Finding the Fourth Proportional to 1,523.59, 2,102.52 and 860.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.59 : 2,102.52 = 860.42 : x
2. Step 2: Convert to fraction form
   1,523.59/2,102.52 = 860.42/x
3. Step 3: Cross multiply
   1,523.59x = 2,102.52 × 860.42
4. Step 4: Simplify right side
   1,523.59x = 1,809,058.74
5. Step 5: Solve for x
   x = 1,809,058.74/1,523.59
6. Step 6: Final answer
   x = 1,187.36