Finding the Fourth Proportional to 3,380.99, 5,067.89 and 1,994.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.99 : 5,067.89 = 1,994.98 : x
2. Step 2: Convert to fraction form
   3,380.99/5,067.89 = 1,994.98/x
3. Step 3: Cross multiply
   3,380.99x = 5,067.89 × 1,994.98
4. Step 4: Simplify right side
   3,380.99x = 10,110,331.51
5. Step 5: Solve for x
   x = 10,110,331.51/3,380.99
6. Step 6: Final answer
   x = 2,990.34