Finding the Fourth Proportional to 1,184.55, 1,634.69 and 660.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.55 : 1,634.69 = 660.59 : x
2. Step 2: Convert to fraction form
   1,184.55/1,634.69 = 660.59/x
3. Step 3: Cross multiply
   1,184.55x = 1,634.69 × 660.59
4. Step 4: Simplify right side
   1,184.55x = 1,079,848.39
5. Step 5: Solve for x
   x = 1,079,848.39/1,184.55
6. Step 6: Final answer
   x = 911.61