Finding the Fourth Proportional to 2,485.74, 3,430.17 and 1,491.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.74 : 3,430.17 = 1,491.57 : x
2. Step 2: Convert to fraction form
   2,485.74/3,430.17 = 1,491.57/x
3. Step 3: Cross multiply
   2,485.74x = 3,430.17 × 1,491.57
4. Step 4: Simplify right side
   2,485.74x = 5,116,338.67
5. Step 5: Solve for x
   x = 5,116,338.67/2,485.74
6. Step 6: Final answer
   x = 2,058.28