Finding the Fourth Proportional to 2,028.96, 3,042.32 and 917.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.96 : 3,042.32 = 917.07 : x
2. Step 2: Convert to fraction form
   2,028.96/3,042.32 = 917.07/x
3. Step 3: Cross multiply
   2,028.96x = 3,042.32 × 917.07
4. Step 4: Simplify right side
   2,028.96x = 2,790,002.90
5. Step 5: Solve for x
   x = 2,790,002.90/2,028.96
6. Step 6: Final answer
   x = 1,375.09