Finding the Fourth Proportional to 2,485.58, 3,430.37 and 1,491.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.58 : 3,430.37 = 1,491.10 : x
2. Step 2: Convert to fraction form
   2,485.58/3,430.37 = 1,491.10/x
3. Step 3: Cross multiply
   2,485.58x = 3,430.37 × 1,491.10
4. Step 4: Simplify right side
   2,485.58x = 5,115,011.47
5. Step 5: Solve for x
   x = 5,115,011.47/2,485.58
6. Step 6: Final answer
   x = 2,057.88