Finding the Fourth Proportional to 2,858, 4,283.72 and 1,296.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,858 : 4,283.72 = 1,296.32 : x
2. Step 2: Convert to fraction form
   2,858/4,283.72 = 1,296.32/x
3. Step 3: Cross multiply
   2,858x = 4,283.72 × 1,296.32
4. Step 4: Simplify right side
   2,858x = 5,553,071.91
5. Step 5: Solve for x
   x = 5,553,071.91/2,858
6. Step 6: Final answer
   x = 1,942.99