Finding the Fourth Proportional to 2,485.45, 3,430.22 and 1,490.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.45 : 3,430.22 = 1,490.69 : x
2. Step 2: Convert to fraction form
   2,485.45/3,430.22 = 1,490.69/x
3. Step 3: Cross multiply
   2,485.45x = 3,430.22 × 1,490.69
4. Step 4: Simplify right side
   2,485.45x = 5,113,395.77
5. Step 5: Solve for x
   x = 5,113,395.77/2,485.45
6. Step 6: Final answer
   x = 2,057.33