Finding the Fourth Proportional to 2,920.96, 4,383.49 and 1,277.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.96 : 4,383.49 = 1,277.98 : x
2. Step 2: Convert to fraction form
   2,920.96/4,383.49 = 1,277.98/x
3. Step 3: Cross multiply
   2,920.96x = 4,383.49 × 1,277.98
4. Step 4: Simplify right side
   2,920.96x = 5,602,004.39
5. Step 5: Solve for x
   x = 5,602,004.39/2,920.96
6. Step 6: Final answer
   x = 1,917.86