Finding the Fourth Proportional to 2,117.67, 2,922.31 and 1,173.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.67 : 2,922.31 = 1,173.42 : x
2. Step 2: Convert to fraction form
   2,117.67/2,922.31 = 1,173.42/x
3. Step 3: Cross multiply
   2,117.67x = 2,922.31 × 1,173.42
4. Step 4: Simplify right side
   2,117.67x = 3,429,097.00
5. Step 5: Solve for x
   x = 3,429,097.00/2,117.67
6. Step 6: Final answer
   x = 1,619.28