Finding the Fourth Proportional to 1,906.69, 2,859.42 and 607.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.69 : 2,859.42 = 607.86 : x
2. Step 2: Convert to fraction form
   1,906.69/2,859.42 = 607.86/x
3. Step 3: Cross multiply
   1,906.69x = 2,859.42 × 607.86
4. Step 4: Simplify right side
   1,906.69x = 1,738,127.04
5. Step 5: Solve for x
   x = 1,738,127.04/1,906.69
6. Step 6: Final answer
   x = 911.59