Finding the Fourth Proportional to 2,633.82, 3,950.28 and 878.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.82 : 3,950.28 = 878.58 : x
2. Step 2: Convert to fraction form
   2,633.82/3,950.28 = 878.58/x
3. Step 3: Cross multiply
   2,633.82x = 3,950.28 × 878.58
4. Step 4: Simplify right side
   2,633.82x = 3,470,637.00
5. Step 5: Solve for x
   x = 3,470,637.00/2,633.82
6. Step 6: Final answer
   x = 1,317.72