Finding the Fourth Proportional to 2,961.98, 4,443.01 and 2,871.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.98 : 4,443.01 = 2,871.77 : x
2. Step 2: Convert to fraction form
   2,961.98/4,443.01 = 2,871.77/x
3. Step 3: Cross multiply
   2,961.98x = 4,443.01 × 2,871.77
4. Step 4: Simplify right side
   2,961.98x = 12,759,280.61
5. Step 5: Solve for x
   x = 12,759,280.61/2,961.98
6. Step 6: Final answer
   x = 4,307.69