Finding the Fourth Proportional to 1,350.55, 2,021.33 and 979.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.55 : 2,021.33 = 979.30 : x
2. Step 2: Convert to fraction form
   1,350.55/2,021.33 = 979.30/x
3. Step 3: Cross multiply
   1,350.55x = 2,021.33 × 979.30
4. Step 4: Simplify right side
   1,350.55x = 1,979,483.57
5. Step 5: Solve for x
   x = 1,979,483.57/1,350.55
6. Step 6: Final answer
   x = 1,465.69