Finding the Fourth Proportional to 1,443.54, 2,168.78 and 924.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.54 : 2,168.78 = 924.55 : x
2. Step 2: Convert to fraction form
   1,443.54/2,168.78 = 924.55/x
3. Step 3: Cross multiply
   1,443.54x = 2,168.78 × 924.55
4. Step 4: Simplify right side
   1,443.54x = 2,005,145.55
5. Step 5: Solve for x
   x = 2,005,145.55/1,443.54
6. Step 6: Final answer
   x = 1,389.05