Finding the Fourth Proportional to 1,443.40, 2,164.88 and 469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.40 : 2,164.88 = 469.50 : x
2. Step 2: Convert to fraction form
   1,443.40/2,164.88 = 469.50/x
3. Step 3: Cross multiply
   1,443.40x = 2,164.88 × 469.50
4. Step 4: Simplify right side
   1,443.40x = 1,016,411.16
5. Step 5: Solve for x
   x = 1,016,411.16/1,443.40
6. Step 6: Final answer
   x = 704.18