Finding the Fourth Proportional to 1,523.98, 2,102.86 and 860.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.98 : 2,102.86 = 860.82 : x
2. Step 2: Convert to fraction form
   1,523.98/2,102.86 = 860.82/x
3. Step 3: Cross multiply
   1,523.98x = 2,102.86 × 860.82
4. Step 4: Simplify right side
   1,523.98x = 1,810,183.95
5. Step 5: Solve for x
   x = 1,810,183.95/1,523.98
6. Step 6: Final answer
   x = 1,187.80