Finding the Fourth Proportional to 3,429.98, 4,731.63 and 2,168.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.98 : 4,731.63 = 2,168.91 : x
2. Step 2: Convert to fraction form
   3,429.98/4,731.63 = 2,168.91/x
3. Step 3: Cross multiply
   3,429.98x = 4,731.63 × 2,168.91
4. Step 4: Simplify right side
   3,429.98x = 10,262,483.69
5. Step 5: Solve for x
   x = 10,262,483.69/3,429.98
6. Step 6: Final answer
   x = 2,992.00