Finding the Fourth Proportional to 2,942.39, 4,059.50 and 1,666.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,942.39 : 4,059.50 = 1,666.09 : x
2. Step 2: Convert to fraction form
   2,942.39/4,059.50 = 1,666.09/x
3. Step 3: Cross multiply
   2,942.39x = 4,059.50 × 1,666.09
4. Step 4: Simplify right side
   2,942.39x = 6,763,495.89
5. Step 5: Solve for x
   x = 6,763,495.89/2,942.39
6. Step 6: Final answer
   x = 2,298.64