Finding the Fourth Proportional to 1,185.48, 1,778.76 and 970.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.48 : 1,778.76 = 970.56 : x
2. Step 2: Convert to fraction form
   1,185.48/1,778.76 = 970.56/x
3. Step 3: Cross multiply
   1,185.48x = 1,778.76 × 970.56
4. Step 4: Simplify right side
   1,185.48x = 1,726,393.31
5. Step 5: Solve for x
   x = 1,726,393.31/1,185.48
6. Step 6: Final answer
   x = 1,456.28