Finding the Fourth Proportional to 2,322.88, 3,483.20 and 678.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,322.88 : 3,483.20 = 678.98 : x
2. Step 2: Convert to fraction form
   2,322.88/3,483.20 = 678.98/x
3. Step 3: Cross multiply
   2,322.88x = 3,483.20 × 678.98
4. Step 4: Simplify right side
   2,322.88x = 2,365,033.54
5. Step 5: Solve for x
   x = 2,365,033.54/2,322.88
6. Step 6: Final answer
   x = 1,018.15