Finding the Fourth Proportional to 2,420.52, 3,631.77 and 860.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,420.52 : 3,631.77 = 860.82 : x
2. Step 2: Convert to fraction form
   2,420.52/3,631.77 = 860.82/x
3. Step 3: Cross multiply
   2,420.52x = 3,631.77 × 860.82
4. Step 4: Simplify right side
   2,420.52x = 3,126,300.25
5. Step 5: Solve for x
   x = 3,126,300.25/2,420.52
6. Step 6: Final answer
   x = 1,291.58