Finding the Fourth Proportional to 1,191.86, 1,786.73 and 606.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.86 : 1,786.73 = 606.53 : x
2. Step 2: Convert to fraction form
   1,191.86/1,786.73 = 606.53/x
3. Step 3: Cross multiply
   1,191.86x = 1,786.73 × 606.53
4. Step 4: Simplify right side
   1,191.86x = 1,083,706.78
5. Step 5: Solve for x
   x = 1,083,706.78/1,191.86
6. Step 6: Final answer
   x = 909.26