Finding the Fourth Proportional to 1,468.18, 2,025.88 and 878.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,468.18 : 2,025.88 = 878.64 : x
2. Step 2: Convert to fraction form
   1,468.18/2,025.88 = 878.64/x
3. Step 3: Cross multiply
   1,468.18x = 2,025.88 × 878.64
4. Step 4: Simplify right side
   1,468.18x = 1,780,019.20
5. Step 5: Solve for x
   x = 1,780,019.20/1,468.18
6. Step 6: Final answer
   x = 1,212.40