Finding the Fourth Proportional to 2,588.85, 3,574.37 and 1,990.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.85 : 3,574.37 = 1,990.29 : x
2. Step 2: Convert to fraction form
   2,588.85/3,574.37 = 1,990.29/x
3. Step 3: Cross multiply
   2,588.85x = 3,574.37 × 1,990.29
4. Step 4: Simplify right side
   2,588.85x = 7,114,032.27
5. Step 5: Solve for x
   x = 7,114,032.27/2,588.85
6. Step 6: Final answer
   x = 2,747.95