Finding the Fourth Proportional to 1,300.75, 1,951.78 and 569.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.75 : 1,951.78 = 569.45 : x
2. Step 2: Convert to fraction form
   1,300.75/1,951.78 = 569.45/x
3. Step 3: Cross multiply
   1,300.75x = 1,951.78 × 569.45
4. Step 4: Simplify right side
   1,300.75x = 1,111,441.12
5. Step 5: Solve for x
   x = 1,111,441.12/1,300.75
6. Step 6: Final answer
   x = 854.46