Finding the Fourth Proportional to 2,132.69, 3,189.78 and 1,253.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.69 : 3,189.78 = 1,253.09 : x
2. Step 2: Convert to fraction form
   2,132.69/3,189.78 = 1,253.09/x
3. Step 3: Cross multiply
   2,132.69x = 3,189.78 × 1,253.09
4. Step 4: Simplify right side
   2,132.69x = 3,997,089.39
5. Step 5: Solve for x
   x = 3,997,089.39/2,132.69
6. Step 6: Final answer
   x = 1,874.21