Finding the Fourth Proportional to 2,957.92, 4,429.29 and 2,870.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,957.92 : 4,429.29 = 2,870.33 : x
2. Step 2: Convert to fraction form
   2,957.92/4,429.29 = 2,870.33/x
3. Step 3: Cross multiply
   2,957.92x = 4,429.29 × 2,870.33
4. Step 4: Simplify right side
   2,957.92x = 12,713,507.36
5. Step 5: Solve for x
   x = 12,713,507.36/2,957.92
6. Step 6: Final answer
   x = 4,298.13