Finding the Fourth Proportional to 2,921.16, 4,383.71 and 1,276.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.16 : 4,383.71 = 1,276.76 : x
2. Step 2: Convert to fraction form
   2,921.16/4,383.71 = 1,276.76/x
3. Step 3: Cross multiply
   2,921.16x = 4,383.71 × 1,276.76
4. Step 4: Simplify right side
   2,921.16x = 5,596,945.58
5. Step 5: Solve for x
   x = 5,596,945.58/2,921.16
6. Step 6: Final answer
   x = 1,916.00