Finding the Fourth Proportional to 2,221.45, 3,059.04 and 1,904.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.45 : 3,059.04 = 1,904.38 : x
2. Step 2: Convert to fraction form
   2,221.45/3,059.04 = 1,904.38/x
3. Step 3: Cross multiply
   2,221.45x = 3,059.04 × 1,904.38
4. Step 4: Simplify right side
   2,221.45x = 5,825,574.60
5. Step 5: Solve for x
   x = 5,825,574.60/2,221.45
6. Step 6: Final answer
   x = 2,622.42