Finding the Fourth Proportional to 2,104.42, 2,904.02 and 1,220.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.42 : 2,904.02 = 1,220.34 : x
2. Step 2: Convert to fraction form
   2,104.42/2,904.02 = 1,220.34/x
3. Step 3: Cross multiply
   2,104.42x = 2,904.02 × 1,220.34
4. Step 4: Simplify right side
   2,104.42x = 3,543,891.77
5. Step 5: Solve for x
   x = 3,543,891.77/2,104.42
6. Step 6: Final answer
   x = 1,684.02