Finding the Fourth Proportional to 2,485.26, 3,428.46 and 1,490.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.26 : 3,428.46 = 1,490.94 : x
2. Step 2: Convert to fraction form
   2,485.26/3,428.46 = 1,490.94/x
3. Step 3: Cross multiply
   2,485.26x = 3,428.46 × 1,490.94
4. Step 4: Simplify right side
   2,485.26x = 5,111,628.15
5. Step 5: Solve for x
   x = 5,111,628.15/2,485.26
6. Step 6: Final answer
   x = 2,056.78