Finding the Fourth Proportional to 2,431.98, 3,648.24 and 788.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.98 : 3,648.24 = 788.22 : x
2. Step 2: Convert to fraction form
   2,431.98/3,648.24 = 788.22/x
3. Step 3: Cross multiply
   2,431.98x = 3,648.24 × 788.22
4. Step 4: Simplify right side
   2,431.98x = 2,875,615.73
5. Step 5: Solve for x
   x = 2,875,615.73/2,431.98
6. Step 6: Final answer
   x = 1,182.42