Finding the Fourth Proportional to 3,871.98, 5,810.67 and 2,900.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.98 : 5,810.67 = 2,900.61 : x
2. Step 2: Convert to fraction form
   3,871.98/5,810.67 = 2,900.61/x
3. Step 3: Cross multiply
   3,871.98x = 5,810.67 × 2,900.61
4. Step 4: Simplify right side
   3,871.98x = 16,854,487.51
5. Step 5: Solve for x
   x = 16,854,487.51/3,871.98
6. Step 6: Final answer
   x = 4,352.94