Finding the Fourth Proportional to 2,164.37, 3,242.27 and 1,431.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.37 : 3,242.27 = 1,431.72 : x
2. Step 2: Convert to fraction form
   2,164.37/3,242.27 = 1,431.72/x
3. Step 3: Cross multiply
   2,164.37x = 3,242.27 × 1,431.72
4. Step 4: Simplify right side
   2,164.37x = 4,642,026.38
5. Step 5: Solve for x
   x = 4,642,026.38/2,164.37
6. Step 6: Final answer
   x = 2,144.75