Finding the Fourth Proportional to 1,483.42, 2,225.57 and 443.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.42 : 2,225.57 = 443.45 : x
2. Step 2: Convert to fraction form
   1,483.42/2,225.57 = 443.45/x
3. Step 3: Cross multiply
   1,483.42x = 2,225.57 × 443.45
4. Step 4: Simplify right side
   1,483.42x = 986,929.02
5. Step 5: Solve for x
   x = 986,929.02/1,483.42
6. Step 6: Final answer
   x = 665.31