Finding the Fourth Proportional to 2,412.72, 3,617.64 and 1,179

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412.72 : 3,617.64 = 1,179 : x
2. Step 2: Convert to fraction form
   2,412.72/3,617.64 = 1,179/x
3. Step 3: Cross multiply
   2,412.72x = 3,617.64 × 1,179
4. Step 4: Simplify right side
   2,412.72x = 4,265,197.56
5. Step 5: Solve for x
   x = 4,265,197.56/2,412.72
6. Step 6: Final answer
   x = 1,767.80