Finding the Fourth Proportional to 1,118.34, 1,675.62 and 684.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.34 : 1,675.62 = 684.59 : x
2. Step 2: Convert to fraction form
   1,118.34/1,675.62 = 684.59/x
3. Step 3: Cross multiply
   1,118.34x = 1,675.62 × 684.59
4. Step 4: Simplify right side
   1,118.34x = 1,147,109.27
5. Step 5: Solve for x
   x = 1,147,109.27/1,118.34
6. Step 6: Final answer
   x = 1,025.72