Finding the Fourth Proportional to 1,524.22, 2,103.32 and 861.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.22 : 2,103.32 = 861.03 : x
2. Step 2: Convert to fraction form
   1,524.22/2,103.32 = 861.03/x
3. Step 3: Cross multiply
   1,524.22x = 2,103.32 × 861.03
4. Step 4: Simplify right side
   1,524.22x = 1,811,018.93
5. Step 5: Solve for x
   x = 1,811,018.93/1,524.22
6. Step 6: Final answer
   x = 1,188.16