Finding the Fourth Proportional to 1,182.74, 1,773.51 and 689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.74 : 1,773.51 = 689.31 : x
2. Step 2: Convert to fraction form
   1,182.74/1,773.51 = 689.31/x
3. Step 3: Cross multiply
   1,182.74x = 1,773.51 × 689.31
4. Step 4: Simplify right side
   1,182.74x = 1,222,498.18
5. Step 5: Solve for x
   x = 1,222,498.18/1,182.74
6. Step 6: Final answer
   x = 1,033.62