Finding the Fourth Proportional to 1,404.48, 2,105.49 and 710.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.48 : 2,105.49 = 710.55 : x
2. Step 2: Convert to fraction form
   1,404.48/2,105.49 = 710.55/x
3. Step 3: Cross multiply
   1,404.48x = 2,105.49 × 710.55
4. Step 4: Simplify right side
   1,404.48x = 1,496,055.92
5. Step 5: Solve for x
   x = 1,496,055.92/1,404.48
6. Step 6: Final answer
   x = 1,065.20