Finding the Fourth Proportional to 2,857.94, 4,280.71 and 1,374.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857.94 : 4,280.71 = 1,374.88 : x
2. Step 2: Convert to fraction form
   2,857.94/4,280.71 = 1,374.88/x
3. Step 3: Cross multiply
   2,857.94x = 4,280.71 × 1,374.88
4. Step 4: Simplify right side
   2,857.94x = 5,885,434.29
5. Step 5: Solve for x
   x = 5,885,434.29/2,857.94
6. Step 6: Final answer
   x = 2,059.33