Finding the Fourth Proportional to 1,990.43, 2,984.83 and 758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.43 : 2,984.83 = 758.15 : x
2. Step 2: Convert to fraction form
   1,990.43/2,984.83 = 758.15/x
3. Step 3: Cross multiply
   1,990.43x = 2,984.83 × 758.15
4. Step 4: Simplify right side
   1,990.43x = 2,262,948.86
5. Step 5: Solve for x
   x = 2,262,948.86/1,990.43
6. Step 6: Final answer
   x = 1,136.91