Finding the Fourth Proportional to 2,084.74, 3,122.55 and 1,618.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.74 : 3,122.55 = 1,618.89 : x
2. Step 2: Convert to fraction form
   2,084.74/3,122.55 = 1,618.89/x
3. Step 3: Cross multiply
   2,084.74x = 3,122.55 × 1,618.89
4. Step 4: Simplify right side
   2,084.74x = 5,055,053.26
5. Step 5: Solve for x
   x = 5,055,053.26/2,084.74
6. Step 6: Final answer
   x = 2,424.79