Finding the Fourth Proportional to 1,084.18, 1,627.07 and 673.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.18 : 1,627.07 = 673.91 : x
2. Step 2: Convert to fraction form
   1,084.18/1,627.07 = 673.91/x
3. Step 3: Cross multiply
   1,084.18x = 1,627.07 × 673.91
4. Step 4: Simplify right side
   1,084.18x = 1,096,498.74
5. Step 5: Solve for x
   x = 1,096,498.74/1,084.18
6. Step 6: Final answer
   x = 1,011.37