Finding the Fourth Proportional to 1,350.56, 2,029.89 and 1,321.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.56 : 2,029.89 = 1,321.81 : x
2. Step 2: Convert to fraction form
   1,350.56/2,029.89 = 1,321.81/x
3. Step 3: Cross multiply
   1,350.56x = 2,029.89 × 1,321.81
4. Step 4: Simplify right side
   1,350.56x = 2,683,128.90
5. Step 5: Solve for x
   x = 2,683,128.90/1,350.56
6. Step 6: Final answer
   x = 1,986.68