Finding the Fourth Proportional to 1,079.54, 1,489.89 and 613.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.54 : 1,489.89 = 613.82 : x
2. Step 2: Convert to fraction form
   1,079.54/1,489.89 = 613.82/x
3. Step 3: Cross multiply
   1,079.54x = 1,489.89 × 613.82
4. Step 4: Simplify right side
   1,079.54x = 914,524.28
5. Step 5: Solve for x
   x = 914,524.28/1,079.54
6. Step 6: Final answer
   x = 847.14