Finding the Fourth Proportional to 1,467.79, 2,025.41 and 878.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,467.79 : 2,025.41 = 878.31 : x
2. Step 2: Convert to fraction form
   1,467.79/2,025.41 = 878.31/x
3. Step 3: Cross multiply
   1,467.79x = 2,025.41 × 878.31
4. Step 4: Simplify right side
   1,467.79x = 1,778,933.47
5. Step 5: Solve for x
   x = 1,778,933.47/1,467.79
6. Step 6: Final answer
   x = 1,211.98