Finding the Fourth Proportional to 1,989.01, 2,744.31 and 1,358.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.01 : 2,744.31 = 1,358.83 : x
2. Step 2: Convert to fraction form
   1,989.01/2,744.31 = 1,358.83/x
3. Step 3: Cross multiply
   1,989.01x = 2,744.31 × 1,358.83
4. Step 4: Simplify right side
   1,989.01x = 3,729,050.76
5. Step 5: Solve for x
   x = 3,729,050.76/1,989.01
6. Step 6: Final answer
   x = 1,874.83