Finding the Fourth Proportional to 2,830.36, 3,904.12 and 2,045.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.36 : 3,904.12 = 2,045.56 : x
2. Step 2: Convert to fraction form
   2,830.36/3,904.12 = 2,045.56/x
3. Step 3: Cross multiply
   2,830.36x = 3,904.12 × 2,045.56
4. Step 4: Simplify right side
   2,830.36x = 7,986,111.71
5. Step 5: Solve for x
   x = 7,986,111.71/2,830.36
6. Step 6: Final answer
   x = 2,821.59