Finding the Fourth Proportional to 2,667.36, 4,002.24 and 1,693.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.36 : 4,002.24 = 1,693.20 : x
2. Step 2: Convert to fraction form
   2,667.36/4,002.24 = 1,693.20/x
3. Step 3: Cross multiply
   2,667.36x = 4,002.24 × 1,693.20
4. Step 4: Simplify right side
   2,667.36x = 6,776,592.77
5. Step 5: Solve for x
   x = 6,776,592.77/2,667.36
6. Step 6: Final answer
   x = 2,540.56