Finding the Fourth Proportional to 2,871.98, 4,308.08 and 923.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,871.98 : 4,308.08 = 923.94 : x
2. Step 2: Convert to fraction form
   2,871.98/4,308.08 = 923.94/x
3. Step 3: Cross multiply
   2,871.98x = 4,308.08 × 923.94
4. Step 4: Simplify right side
   2,871.98x = 3,980,407.44
5. Step 5: Solve for x
   x = 3,980,407.44/2,871.98
6. Step 6: Final answer
   x = 1,385.95