Finding the Fourth Proportional to 1,404.56, 2,105.14 and 622.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.56 : 2,105.14 = 622.88 : x
2. Step 2: Convert to fraction form
   1,404.56/2,105.14 = 622.88/x
3. Step 3: Cross multiply
   1,404.56x = 2,105.14 × 622.88
4. Step 4: Simplify right side
   1,404.56x = 1,311,249.60
5. Step 5: Solve for x
   x = 1,311,249.60/1,404.56
6. Step 6: Final answer
   x = 933.57