Finding the Fourth Proportional to 2,667.21, 4,000.77 and 1,205.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.21 : 4,000.77 = 1,205.34 : x
2. Step 2: Convert to fraction form
   2,667.21/4,000.77 = 1,205.34/x
3. Step 3: Cross multiply
   2,667.21x = 4,000.77 × 1,205.34
4. Step 4: Simplify right side
   2,667.21x = 4,822,288.11
5. Step 5: Solve for x
   x = 4,822,288.11/2,667.21
6. Step 6: Final answer
   x = 1,807.99