Finding the Fourth Proportional to 1,300.40, 1,793.94 and 945.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.40 : 1,793.94 = 945.78 : x
2. Step 2: Convert to fraction form
   1,300.40/1,793.94 = 945.78/x
3. Step 3: Cross multiply
   1,300.40x = 1,793.94 × 945.78
4. Step 4: Simplify right side
   1,300.40x = 1,696,672.57
5. Step 5: Solve for x
   x = 1,696,672.57/1,300.40
6. Step 6: Final answer
   x = 1,304.73