Finding the Fourth Proportional to 2,921.95, 4,383.69 and 1,278.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.95 : 4,383.69 = 1,278.82 : x
2. Step 2: Convert to fraction form
   2,921.95/4,383.69 = 1,278.82/x
3. Step 3: Cross multiply
   2,921.95x = 4,383.69 × 1,278.82
4. Step 4: Simplify right side
   2,921.95x = 5,605,950.45
5. Step 5: Solve for x
   x = 5,605,950.45/2,921.95
6. Step 6: Final answer
   x = 1,918.56