Finding the Fourth Proportional to 2,485.36, 3,429.89 and 1,490.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.36 : 3,429.89 = 1,490.45 : x
2. Step 2: Convert to fraction form
   2,485.36/3,429.89 = 1,490.45/x
3. Step 3: Cross multiply
   2,485.36x = 3,429.89 × 1,490.45
4. Step 4: Simplify right side
   2,485.36x = 5,112,054.95
5. Step 5: Solve for x
   x = 5,112,054.95/2,485.36
6. Step 6: Final answer
   x = 2,056.87