Finding the Fourth Proportional to 1,404.76, 2,106.78 and 674.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.76 : 2,106.78 = 674.20 : x
2. Step 2: Convert to fraction form
   1,404.76/2,106.78 = 674.20/x
3. Step 3: Cross multiply
   1,404.76x = 2,106.78 × 674.20
4. Step 4: Simplify right side
   1,404.76x = 1,420,391.08
5. Step 5: Solve for x
   x = 1,420,391.08/1,404.76
6. Step 6: Final answer
   x = 1,011.13