Finding the Fourth Proportional to 1,179.89, 1,628.17 and 655.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.89 : 1,628.17 = 655.91 : x
2. Step 2: Convert to fraction form
   1,179.89/1,628.17 = 655.91/x
3. Step 3: Cross multiply
   1,179.89x = 1,628.17 × 655.91
4. Step 4: Simplify right side
   1,179.89x = 1,067,932.98
5. Step 5: Solve for x
   x = 1,067,932.98/1,179.89
6. Step 6: Final answer
   x = 905.11