Finding the Fourth Proportional to 2,415.81, 3,617.56 and 1,179.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.81 : 3,617.56 = 1,179.98 : x
2. Step 2: Convert to fraction form
   2,415.81/3,617.56 = 1,179.98/x
3. Step 3: Cross multiply
   2,415.81x = 3,617.56 × 1,179.98
4. Step 4: Simplify right side
   2,415.81x = 4,268,648.45
5. Step 5: Solve for x
   x = 4,268,648.45/2,415.81
6. Step 6: Final answer
   x = 1,766.96