Finding the Fourth Proportional to 2,084.46, 3,128.58 and 1,111.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.46 : 3,128.58 = 1,111.38 : x
2. Step 2: Convert to fraction form
   2,084.46/3,128.58 = 1,111.38/x
3. Step 3: Cross multiply
   2,084.46x = 3,128.58 × 1,111.38
4. Step 4: Simplify right side
   2,084.46x = 3,477,041.24
5. Step 5: Solve for x
   x = 3,477,041.24/2,084.46
6. Step 6: Final answer
   x = 1,668.08