Finding the Fourth Proportional to 1,524.23, 2,103.17 and 861.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,524.23 : 2,103.17 = 861.07 : x
2. Step 2: Convert to fraction form
   1,524.23/2,103.17 = 861.07/x
3. Step 3: Cross multiply
   1,524.23x = 2,103.17 × 861.07
4. Step 4: Simplify right side
   1,524.23x = 1,810,973.49
5. Step 5: Solve for x
   x = 1,810,973.49/1,524.23
6. Step 6: Final answer
   x = 1,188.12