Finding the Fourth Proportional to 2,164.80, 2,987.34 and 1,233.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.80 : 2,987.34 = 1,233.30 : x
2. Step 2: Convert to fraction form
   2,164.80/2,987.34 = 1,233.30/x
3. Step 3: Cross multiply
   2,164.80x = 2,987.34 × 1,233.30
4. Step 4: Simplify right side
   2,164.80x = 3,684,286.42
5. Step 5: Solve for x
   x = 3,684,286.42/2,164.80
6. Step 6: Final answer
   x = 1,701.91