Finding the Fourth Proportional to 2,801.28, 4,201.83 and 953.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.28 : 4,201.83 = 953.31 : x
2. Step 2: Convert to fraction form
   2,801.28/4,201.83 = 953.31/x
3. Step 3: Cross multiply
   2,801.28x = 4,201.83 × 953.31
4. Step 4: Simplify right side
   2,801.28x = 4,005,646.56
5. Step 5: Solve for x
   x = 4,005,646.56/2,801.28
6. Step 6: Final answer
   x = 1,429.93