Finding the Fourth Proportional to 1,300.87, 1,951.37 and 570.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.87 : 1,951.37 = 570.45 : x
2. Step 2: Convert to fraction form
   1,300.87/1,951.37 = 570.45/x
3. Step 3: Cross multiply
   1,300.87x = 1,951.37 × 570.45
4. Step 4: Simplify right side
   1,300.87x = 1,113,156.16
5. Step 5: Solve for x
   x = 1,113,156.16/1,300.87
6. Step 6: Final answer
   x = 855.70