Finding the Fourth Proportional to 2,164.77, 2,987.91 and 1,326.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.77 : 2,987.91 = 1,326.06 : x
2. Step 2: Convert to fraction form
   2,164.77/2,987.91 = 1,326.06/x
3. Step 3: Cross multiply
   2,164.77x = 2,987.91 × 1,326.06
4. Step 4: Simplify right side
   2,164.77x = 3,962,147.93
5. Step 5: Solve for x
   x = 3,962,147.93/2,164.77
6. Step 6: Final answer
   x = 1,830.29