Finding the Fourth Proportional to 2,164.66, 2,983.72 and 1,691.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.66 : 2,983.72 = 1,691.72 : x
2. Step 2: Convert to fraction form
   2,164.66/2,983.72 = 1,691.72/x
3. Step 3: Cross multiply
   2,164.66x = 2,983.72 × 1,691.72
4. Step 4: Simplify right side
   2,164.66x = 5,047,618.80
5. Step 5: Solve for x
   x = 5,047,618.80/2,164.66
6. Step 6: Final answer
   x = 2,331.83