Finding the Fourth Proportional to 1,430.82, 2,146.18 and 443.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.82 : 2,146.18 = 443.62 : x
2. Step 2: Convert to fraction form
   1,430.82/2,146.18 = 443.62/x
3. Step 3: Cross multiply
   1,430.82x = 2,146.18 × 443.62
4. Step 4: Simplify right side
   1,430.82x = 952,088.37
5. Step 5: Solve for x
   x = 952,088.37/1,430.82
6. Step 6: Final answer
   x = 665.41