Finding the Fourth Proportional to 2,471.96, 3,709.74 and 1,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,471.96 : 3,709.74 = 1,990.82 : x
2. Step 2: Convert to fraction form
   2,471.96/3,709.74 = 1,990.82/x
3. Step 3: Cross multiply
   2,471.96x = 3,709.74 × 1,990.82
4. Step 4: Simplify right side
   2,471.96x = 7,385,424.59
5. Step 5: Solve for x
   x = 7,385,424.59/2,471.96
6. Step 6: Final answer
   x = 2,987.68