Finding the Fourth Proportional to 1,443.42, 2,165.43 and 470.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.42 : 2,165.43 = 470.21 : x
2. Step 2: Convert to fraction form
   1,443.42/2,165.43 = 470.21/x
3. Step 3: Cross multiply
   1,443.42x = 2,165.43 × 470.21
4. Step 4: Simplify right side
   1,443.42x = 1,018,197.78
5. Step 5: Solve for x
   x = 1,018,197.78/1,443.42
6. Step 6: Final answer
   x = 705.41