Finding the Fourth Proportional to 2,118.75, 2,923.59 and 1,174.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.75 : 2,923.59 = 1,174.42 : x
2. Step 2: Convert to fraction form
   2,118.75/2,923.59 = 1,174.42/x
3. Step 3: Cross multiply
   2,118.75x = 2,923.59 × 1,174.42
4. Step 4: Simplify right side
   2,118.75x = 3,433,522.57
5. Step 5: Solve for x
   x = 3,433,522.57/2,118.75
6. Step 6: Final answer
   x = 1,620.54