Finding the Fourth Proportional to 2,802.21, 4,202.89 and 953.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,802.21 : 4,202.89 = 953.38 : x
2. Step 2: Convert to fraction form
   2,802.21/4,202.89 = 953.38/x
3. Step 3: Cross multiply
   2,802.21x = 4,202.89 × 953.38
4. Step 4: Simplify right side
   2,802.21x = 4,006,951.27
5. Step 5: Solve for x
   x = 4,006,951.27/2,802.21
6. Step 6: Final answer
   x = 1,429.93