Finding the Fourth Proportional to 1,300.82, 1,951.88 and 570.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.82 : 1,951.88 = 570.40 : x
2. Step 2: Convert to fraction form
   1,300.82/1,951.88 = 570.40/x
3. Step 3: Cross multiply
   1,300.82x = 1,951.88 × 570.40
4. Step 4: Simplify right side
   1,300.82x = 1,113,339.74
5. Step 5: Solve for x
   x = 1,113,339.74/1,300.82
6. Step 6: Final answer
   x = 855.88