Finding the Fourth Proportional to 2,930.50, 4,042.83 and 1,921.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.50 : 4,042.83 = 1,921.87 : x
2. Step 2: Convert to fraction form
   2,930.50/4,042.83 = 1,921.87/x
3. Step 3: Cross multiply
   2,930.50x = 4,042.83 × 1,921.87
4. Step 4: Simplify right side
   2,930.50x = 7,769,793.69
5. Step 5: Solve for x
   x = 7,769,793.69/2,930.50
6. Step 6: Final answer
   x = 2,651.35