Finding the Fourth Proportional to 2,021.94, 3,030.28 and 910.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.94 : 3,030.28 = 910.54 : x
2. Step 2: Convert to fraction form
   2,021.94/3,030.28 = 910.54/x
3. Step 3: Cross multiply
   2,021.94x = 3,030.28 × 910.54
4. Step 4: Simplify right side
   2,021.94x = 2,759,191.15
5. Step 5: Solve for x
   x = 2,759,191.15/2,021.94
6. Step 6: Final answer
   x = 1,364.63