Finding the Fourth Proportional to 2,421.52, 3,633.27 and 861.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.52 : 3,633.27 = 861.82 : x
2. Step 2: Convert to fraction form
   2,421.52/3,633.27 = 861.82/x
3. Step 3: Cross multiply
   2,421.52x = 3,633.27 × 861.82
4. Step 4: Simplify right side
   2,421.52x = 3,131,224.75
5. Step 5: Solve for x
   x = 3,131,224.75/2,421.52
6. Step 6: Final answer
   x = 1,293.08