Finding the Fourth Proportional to 1,173.17, 1,758.59 and 653.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.17 : 1,758.59 = 653.41 : x
2. Step 2: Convert to fraction form
   1,173.17/1,758.59 = 653.41/x
3. Step 3: Cross multiply
   1,173.17x = 1,758.59 × 653.41
4. Step 4: Simplify right side
   1,173.17x = 1,149,068.23
5. Step 5: Solve for x
   x = 1,149,068.23/1,173.17
6. Step 6: Final answer
   x = 979.46