Finding the Fourth Proportional to 1,714.72, 2,568.49 and 1,421.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,714.72 : 2,568.49 = 1,421.53 : x
2. Step 2: Convert to fraction form
   1,714.72/2,568.49 = 1,421.53/x
3. Step 3: Cross multiply
   1,714.72x = 2,568.49 × 1,421.53
4. Step 4: Simplify right side
   1,714.72x = 3,651,172.75
5. Step 5: Solve for x
   x = 3,651,172.75/1,714.72
6. Step 6: Final answer
   x = 2,129.31