Finding the Fourth Proportional to 1,523.71, 2,102.86 and 860.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.71 : 2,102.86 = 860.73 : x
2. Step 2: Convert to fraction form
   1,523.71/2,102.86 = 860.73/x
3. Step 3: Cross multiply
   1,523.71x = 2,102.86 × 860.73
4. Step 4: Simplify right side
   1,523.71x = 1,809,994.69
5. Step 5: Solve for x
   x = 1,809,994.69/1,523.71
6. Step 6: Final answer
   x = 1,187.89