Finding the Fourth Proportional to 1,184.12, 1,633.89 and 660.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.12 : 1,633.89 = 660.15 : x
2. Step 2: Convert to fraction form
   1,184.12/1,633.89 = 660.15/x
3. Step 3: Cross multiply
   1,184.12x = 1,633.89 × 660.15
4. Step 4: Simplify right side
   1,184.12x = 1,078,612.48
5. Step 5: Solve for x
   x = 1,078,612.48/1,184.12
6. Step 6: Final answer
   x = 910.90