Finding the Fourth Proportional to 2,118.80, 2,923.81 and 1,174.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.80 : 2,923.81 = 1,174.56 : x
2. Step 2: Convert to fraction form
   2,118.80/2,923.81 = 1,174.56/x
3. Step 3: Cross multiply
   2,118.80x = 2,923.81 × 1,174.56
4. Step 4: Simplify right side
   2,118.80x = 3,434,190.27
5. Step 5: Solve for x
   x = 3,434,190.27/2,118.80
6. Step 6: Final answer
   x = 1,620.82