Finding the Fourth Proportional to 2,967.78, 4,095.61 and 1,921.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,967.78 : 4,095.61 = 1,921.67 : x
2. Step 2: Convert to fraction form
   2,967.78/4,095.61 = 1,921.67/x
3. Step 3: Cross multiply
   2,967.78x = 4,095.61 × 1,921.67
4. Step 4: Simplify right side
   2,967.78x = 7,870,410.87
5. Step 5: Solve for x
   x = 7,870,410.87/2,967.78
6. Step 6: Final answer
   x = 2,651.95