Finding the Fourth Proportional to 1,443.89, 2,165.67 and 469.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.89 : 2,165.67 = 469.91 : x
2. Step 2: Convert to fraction form
   1,443.89/2,165.67 = 469.91/x
3. Step 3: Cross multiply
   1,443.89x = 2,165.67 × 469.91
4. Step 4: Simplify right side
   1,443.89x = 1,017,659.16
5. Step 5: Solve for x
   x = 1,017,659.16/1,443.89
6. Step 6: Final answer
   x = 704.81