Finding the Fourth Proportional to 1,076.06, 1,613.82 and 607.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.06 : 1,613.82 = 607.88 : x
2. Step 2: Convert to fraction form
   1,076.06/1,613.82 = 607.88/x
3. Step 3: Cross multiply
   1,076.06x = 1,613.82 × 607.88
4. Step 4: Simplify right side
   1,076.06x = 981,008.90
5. Step 5: Solve for x
   x = 981,008.90/1,076.06
6. Step 6: Final answer
   x = 911.67