Finding the Fourth Proportional to 1,326.05, 1,830.84 and 1,185.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,326.05 : 1,830.84 = 1,185.72 : x
2. Step 2: Convert to fraction form
   1,326.05/1,830.84 = 1,185.72/x
3. Step 3: Cross multiply
   1,326.05x = 1,830.84 × 1,185.72
4. Step 4: Simplify right side
   1,326.05x = 2,170,863.60
5. Step 5: Solve for x
   x = 2,170,863.60/1,326.05
6. Step 6: Final answer
   x = 1,637.09