Finding the Fourth Proportional to 2,633.67, 3,950.02 and 878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.67 : 3,950.02 = 878.50 : x
2. Step 2: Convert to fraction form
   2,633.67/3,950.02 = 878.50/x
3. Step 3: Cross multiply
   2,633.67x = 3,950.02 × 878.50
4. Step 4: Simplify right side
   2,633.67x = 3,470,092.57
5. Step 5: Solve for x
   x = 3,470,092.57/2,633.67
6. Step 6: Final answer
   x = 1,317.59