Finding the Fourth Proportional to 1,417.29, 2,122.56 and 684.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.29 : 2,122.56 = 684.51 : x
2. Step 2: Convert to fraction form
   1,417.29/2,122.56 = 684.51/x
3. Step 3: Cross multiply
   1,417.29x = 2,122.56 × 684.51
4. Step 4: Simplify right side
   1,417.29x = 1,452,913.55
5. Step 5: Solve for x
   x = 1,452,913.55/1,417.29
6. Step 6: Final answer
   x = 1,025.13