Finding the Fourth Proportional to 2,538.92, 3,503.06 and 1,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.92 : 3,503.06 = 1,490.78 : x
2. Step 2: Convert to fraction form
   2,538.92/3,503.06 = 1,490.78/x
3. Step 3: Cross multiply
   2,538.92x = 3,503.06 × 1,490.78
4. Step 4: Simplify right side
   2,538.92x = 5,222,291.79
5. Step 5: Solve for x
   x = 5,222,291.79/2,538.92
6. Step 6: Final answer
   x = 2,056.89