Finding the Fourth Proportional to 2,107.98, 3,153.69 and 1,861.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.98 : 3,153.69 = 1,861.74 : x
2. Step 2: Convert to fraction form
   2,107.98/3,153.69 = 1,861.74/x
3. Step 3: Cross multiply
   2,107.98x = 3,153.69 × 1,861.74
4. Step 4: Simplify right side
   2,107.98x = 5,871,350.82
5. Step 5: Solve for x
   x = 5,871,350.82/2,107.98
6. Step 6: Final answer
   x = 2,785.30