Finding the Fourth Proportional to 2,321.76, 3,483.43 and 678.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.76 : 3,483.43 = 678.54 : x
2. Step 2: Convert to fraction form
   2,321.76/3,483.43 = 678.54/x
3. Step 3: Cross multiply
   2,321.76x = 3,483.43 × 678.54
4. Step 4: Simplify right side
   2,321.76x = 2,363,661.78
5. Step 5: Solve for x
   x = 2,363,661.78/2,321.76
6. Step 6: Final answer
   x = 1,018.05