Finding the Fourth Proportional to 1,180.56, 1,628.88 and 656.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.56 : 1,628.88 = 656.46 : x
2. Step 2: Convert to fraction form
   1,180.56/1,628.88 = 656.46/x
3. Step 3: Cross multiply
   1,180.56x = 1,628.88 × 656.46
4. Step 4: Simplify right side
   1,180.56x = 1,069,294.56
5. Step 5: Solve for x
   x = 1,069,294.56/1,180.56
6. Step 6: Final answer
   x = 905.75