Finding the Fourth Proportional to 1,989.71, 2,983.89 and 756.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.71 : 2,983.89 = 756.83 : x
2. Step 2: Convert to fraction form
   1,989.71/2,983.89 = 756.83/x
3. Step 3: Cross multiply
   1,989.71x = 2,983.89 × 756.83
4. Step 4: Simplify right side
   1,989.71x = 2,258,282.55
5. Step 5: Solve for x
   x = 2,258,282.55/1,989.71
6. Step 6: Final answer
   x = 1,134.98