Finding the Fourth Proportional to 2,116.50, 2,920.10 and 1,371.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.50 : 2,920.10 = 1,371.03 : x
2. Step 2: Convert to fraction form
   2,116.50/2,920.10 = 1,371.03/x
3. Step 3: Cross multiply
   2,116.50x = 2,920.10 × 1,371.03
4. Step 4: Simplify right side
   2,116.50x = 4,003,537.85
5. Step 5: Solve for x
   x = 4,003,537.85/2,116.50
6. Step 6: Final answer
   x = 1,891.58