Finding the Fourth Proportional to 2,154.68, 3,230.12 and 1,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.68 : 3,230.12 = 1,422.72 : x
2. Step 2: Convert to fraction form
   2,154.68/3,230.12 = 1,422.72/x
3. Step 3: Cross multiply
   2,154.68x = 3,230.12 × 1,422.72
4. Step 4: Simplify right side
   2,154.68x = 4,595,556.33
5. Step 5: Solve for x
   x = 4,595,556.33/2,154.68
6. Step 6: Final answer
   x = 2,132.83