Finding the Fourth Proportional to 2,538.55, 3,805.23 and 1,440.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.55 : 3,805.23 = 1,440.60 : x
2. Step 2: Convert to fraction form
   2,538.55/3,805.23 = 1,440.60/x
3. Step 3: Cross multiply
   2,538.55x = 3,805.23 × 1,440.60
4. Step 4: Simplify right side
   2,538.55x = 5,481,795.31
5. Step 5: Solve for x
   x = 5,481,795.31/2,538.55
6. Step 6: Final answer
   x = 2,159.42