Finding the Fourth Proportional to 1,469.76, 2,028.42 and 945.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.76 : 2,028.42 = 945.72 : x
2. Step 2: Convert to fraction form
   1,469.76/2,028.42 = 945.72/x
3. Step 3: Cross multiply
   1,469.76x = 2,028.42 × 945.72
4. Step 4: Simplify right side
   1,469.76x = 1,918,317.36
5. Step 5: Solve for x
   x = 1,918,317.36/1,469.76
6. Step 6: Final answer
   x = 1,305.19