Finding the Fourth Proportional to 2,589.52, 3,574.56 and 1,990.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.52 : 3,574.56 = 1,990.84 : x
2. Step 2: Convert to fraction form
   2,589.52/3,574.56 = 1,990.84/x
3. Step 3: Cross multiply
   2,589.52x = 3,574.56 × 1,990.84
4. Step 4: Simplify right side
   2,589.52x = 7,116,377.03
5. Step 5: Solve for x
   x = 7,116,377.03/2,589.52
6. Step 6: Final answer
   x = 2,748.15