Finding the Fourth Proportional to 2,321.48, 3,482.76 and 678.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.48 : 3,482.76 = 678.06 : x
2. Step 2: Convert to fraction form
   2,321.48/3,482.76 = 678.06/x
3. Step 3: Cross multiply
   2,321.48x = 3,482.76 × 678.06
4. Step 4: Simplify right side
   2,321.48x = 2,361,520.25
5. Step 5: Solve for x
   x = 2,361,520.25/2,321.48
6. Step 6: Final answer
   x = 1,017.25