Finding the Fourth Proportional to 1,707.84, 2,558.04 and 1,122.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,707.84 : 2,558.04 = 1,122.18 : x
2. Step 2: Convert to fraction form
   1,707.84/2,558.04 = 1,122.18/x
3. Step 3: Cross multiply
   1,707.84x = 2,558.04 × 1,122.18
4. Step 4: Simplify right side
   1,707.84x = 2,870,581.33
5. Step 5: Solve for x
   x = 2,870,581.33/1,707.84
6. Step 6: Final answer
   x = 1,680.83