Finding the Fourth Proportional to 2,632.86, 3,949.40 and 878.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.86 : 3,949.40 = 878.00 : x
2. Step 2: Convert to fraction form
   2,632.86/3,949.40 = 878.00/x
3. Step 3: Cross multiply
   2,632.86x = 3,949.40 × 878.00
4. Step 4: Simplify right side
   2,632.86x = 3,467,555.65
5. Step 5: Solve for x
   x = 3,467,555.65/2,632.86
6. Step 6: Final answer
   x = 1,317.03