Finding the Fourth Proportional to 2,215.86, 3,056.04 and 1,904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.86 : 3,056.04 = 1,904.10 : x
2. Step 2: Convert to fraction form
   2,215.86/3,056.04 = 1,904.10/x
3. Step 3: Cross multiply
   2,215.86x = 3,056.04 × 1,904.10
4. Step 4: Simplify right side
   2,215.86x = 5,819,005.76
5. Step 5: Solve for x
   x = 5,819,005.76/2,215.86
6. Step 6: Final answer
   x = 2,626.07