Finding the Fourth Proportional to 2,167.75, 2,991.48 and 1,173.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.75 : 2,991.48 = 1,173.02 : x
2. Step 2: Convert to fraction form
   2,167.75/2,991.48 = 1,173.02/x
3. Step 3: Cross multiply
   2,167.75x = 2,991.48 × 1,173.02
4. Step 4: Simplify right side
   2,167.75x = 3,509,069.94
5. Step 5: Solve for x
   x = 3,509,069.94/2,167.75
6. Step 6: Final answer
   x = 1,618.76