Finding the Fourth Proportional to 1,173.67, 1,759.33 and 653.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.67 : 1,759.33 = 653.91 : x
2. Step 2: Convert to fraction form
   1,173.67/1,759.33 = 653.91/x
3. Step 3: Cross multiply
   1,173.67x = 1,759.33 × 653.91
4. Step 4: Simplify right side
   1,173.67x = 1,150,443.48
5. Step 5: Solve for x
   x = 1,150,443.48/1,173.67
6. Step 6: Final answer
   x = 980.21