Finding the Fourth Proportional to 1,230.84, 1,698.50 and 671.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230.84 : 1,698.50 = 671.27 : x
2. Step 2: Convert to fraction form
   1,230.84/1,698.50 = 671.27/x
3. Step 3: Cross multiply
   1,230.84x = 1,698.50 × 671.27
4. Step 4: Simplify right side
   1,230.84x = 1,140,145.28
5. Step 5: Solve for x
   x = 1,140,145.28/1,230.84
6. Step 6: Final answer
   x = 926.31