Finding the Fourth Proportional to 1,639.32, 2,249.54 and 1,490.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,639.32 : 2,249.54 = 1,490.82 : x
2. Step 2: Convert to fraction form
   1,639.32/2,249.54 = 1,490.82/x
3. Step 3: Cross multiply
   1,639.32x = 2,249.54 × 1,490.82
4. Step 4: Simplify right side
   1,639.32x = 3,353,651.77
5. Step 5: Solve for x
   x = 3,353,651.77/1,639.32
6. Step 6: Final answer
   x = 2,045.76