Finding the Fourth Proportional to 2,930.87, 4,366.71 and 2,791.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.87 : 4,366.71 = 2,791.55 : x
2. Step 2: Convert to fraction form
   2,930.87/4,366.71 = 2,791.55/x
3. Step 3: Cross multiply
   2,930.87x = 4,366.71 × 2,791.55
4. Step 4: Simplify right side
   2,930.87x = 12,189,889.30
5. Step 5: Solve for x
   x = 12,189,889.30/2,930.87
6. Step 6: Final answer
   x = 4,159.14