Finding the Fourth Proportional to 1,983.05, 2,737.89 and 1,275.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.05 : 2,737.89 = 1,275.21 : x
2. Step 2: Convert to fraction form
   1,983.05/2,737.89 = 1,275.21/x
3. Step 3: Cross multiply
   1,983.05x = 2,737.89 × 1,275.21
4. Step 4: Simplify right side
   1,983.05x = 3,491,364.64
5. Step 5: Solve for x
   x = 3,491,364.64/1,983.05
6. Step 6: Final answer
   x = 1,760.61