Finding the Fourth Proportional to 1,404.45, 2,108.70 and 996.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.45 : 2,108.70 = 996.21 : x
2. Step 2: Convert to fraction form
   1,404.45/2,108.70 = 996.21/x
3. Step 3: Cross multiply
   1,404.45x = 2,108.70 × 996.21
4. Step 4: Simplify right side
   1,404.45x = 2,100,708.03
5. Step 5: Solve for x
   x = 2,100,708.03/1,404.45
6. Step 6: Final answer
   x = 1,495.75