Finding the Fourth Proportional to 2,886.09, 4,329.94 and 1,326.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.09 : 4,329.94 = 1,326.57 : x
2. Step 2: Convert to fraction form
   2,886.09/4,329.94 = 1,326.57/x
3. Step 3: Cross multiply
   2,886.09x = 4,329.94 × 1,326.57
4. Step 4: Simplify right side
   2,886.09x = 5,743,968.51
5. Step 5: Solve for x
   x = 5,743,968.51/2,886.09
6. Step 6: Final answer
   x = 1,990.23