Finding the Fourth Proportional to 2,667.12, 3,997.80 and 1,940.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.12 : 3,997.80 = 1,940.04 : x
2. Step 2: Convert to fraction form
   2,667.12/3,997.80 = 1,940.04/x
3. Step 3: Cross multiply
   2,667.12x = 3,997.80 × 1,940.04
4. Step 4: Simplify right side
   2,667.12x = 7,755,891.91
5. Step 5: Solve for x
   x = 7,755,891.91/2,667.12
6. Step 6: Final answer
   x = 2,907.97