Finding the Fourth Proportional to 1,303.43, 1,796.78 and 860.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,303.43 : 1,796.78 = 860.56 : x
2. Step 2: Convert to fraction form
   1,303.43/1,796.78 = 860.56/x
3. Step 3: Cross multiply
   1,303.43x = 1,796.78 × 860.56
4. Step 4: Simplify right side
   1,303.43x = 1,546,234.66
5. Step 5: Solve for x
   x = 1,546,234.66/1,303.43
6. Step 6: Final answer
   x = 1,186.29