Finding the Fourth Proportional to 2,538.55, 3,503.88 and 1,491.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.55 : 3,503.88 = 1,491.31 : x
2. Step 2: Convert to fraction form
   2,538.55/3,503.88 = 1,491.31/x
3. Step 3: Cross multiply
   2,538.55x = 3,503.88 × 1,491.31
4. Step 4: Simplify right side
   2,538.55x = 5,225,371.28
5. Step 5: Solve for x
   x = 5,225,371.28/2,538.55
6. Step 6: Final answer
   x = 2,058.41