Finding the Fourth Proportional to 2,665.77, 3,997.96 and 1,106.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.77 : 3,997.96 = 1,106.21 : x
2. Step 2: Convert to fraction form
   2,665.77/3,997.96 = 1,106.21/x
3. Step 3: Cross multiply
   2,665.77x = 3,997.96 × 1,106.21
4. Step 4: Simplify right side
   2,665.77x = 4,422,583.33
5. Step 5: Solve for x
   x = 4,422,583.33/2,665.77
6. Step 6: Final answer
   x = 1,659.03