Finding the Fourth Proportional to 3,404.73, 5,106.91 and 1,999.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.73 : 5,106.91 = 1,999.92 : x
2. Step 2: Convert to fraction form
   3,404.73/5,106.91 = 1,999.92/x
3. Step 3: Cross multiply
   3,404.73x = 5,106.91 × 1,999.92
4. Step 4: Simplify right side
   3,404.73x = 10,213,411.45
5. Step 5: Solve for x
   x = 10,213,411.45/3,404.73
6. Step 6: Final answer
   x = 2,999.77