Finding the Fourth Proportional to 2,118.28, 2,923.25 and 1,174.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.28 : 2,923.25 = 1,174.09 : x
2. Step 2: Convert to fraction form
   2,118.28/2,923.25 = 1,174.09/x
3. Step 3: Cross multiply
   2,118.28x = 2,923.25 × 1,174.09
4. Step 4: Simplify right side
   2,118.28x = 3,432,158.59
5. Step 5: Solve for x
   x = 3,432,158.59/2,118.28
6. Step 6: Final answer
   x = 1,620.26