Finding the Fourth Proportional to 2,151.89, 3,227.82 and 1,421.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.89 : 3,227.82 = 1,421.29 : x
2. Step 2: Convert to fraction form
   2,151.89/3,227.82 = 1,421.29/x
3. Step 3: Cross multiply
   2,151.89x = 3,227.82 × 1,421.29
4. Step 4: Simplify right side
   2,151.89x = 4,587,666.99
5. Step 5: Solve for x
   x = 4,587,666.99/2,151.89
6. Step 6: Final answer
   x = 2,131.93