Finding the Fourth Proportional to 2,650.77, 3,977.69 and 1,418.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.77 : 3,977.69 = 1,418.87 : x
2. Step 2: Convert to fraction form
   2,650.77/3,977.69 = 1,418.87/x
3. Step 3: Cross multiply
   2,650.77x = 3,977.69 × 1,418.87
4. Step 4: Simplify right side
   2,650.77x = 5,643,833.18
5. Step 5: Solve for x
   x = 5,643,833.18/2,650.77
6. Step 6: Final answer
   x = 2,129.13