Finding the Fourth Proportional to 2,577.83, 3,864.76 and 1,278.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.83 : 3,864.76 = 1,278.29 : x
2. Step 2: Convert to fraction form
   2,577.83/3,864.76 = 1,278.29/x
3. Step 3: Cross multiply
   2,577.83x = 3,864.76 × 1,278.29
4. Step 4: Simplify right side
   2,577.83x = 4,940,284.06
5. Step 5: Solve for x
   x = 4,940,284.06/2,577.83
6. Step 6: Final answer
   x = 1,916.45