Finding the Fourth Proportional to 2,164.85, 2,987.71 and 1,326.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.85 : 2,987.71 = 1,326.10 : x
2. Step 2: Convert to fraction form
   2,164.85/2,987.71 = 1,326.10/x
3. Step 3: Cross multiply
   2,164.85x = 2,987.71 × 1,326.10
4. Step 4: Simplify right side
   2,164.85x = 3,962,002.23
5. Step 5: Solve for x
   x = 3,962,002.23/2,164.85
6. Step 6: Final answer
   x = 1,830.15