Finding the Fourth Proportional to 2,154.56, 3,231.17 and 1,427.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.56 : 3,231.17 = 1,427.99 : x
2. Step 2: Convert to fraction form
   2,154.56/3,231.17 = 1,427.99/x
3. Step 3: Cross multiply
   2,154.56x = 3,231.17 × 1,427.99
4. Step 4: Simplify right side
   2,154.56x = 4,614,071.31
5. Step 5: Solve for x
   x = 4,614,071.31/2,154.56
6. Step 6: Final answer
   x = 2,141.54