Finding the Fourth Proportional to 1,404, 2,106.72 and 624.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404 : 2,106.72 = 624.24 : x
2. Step 2: Convert to fraction form
   1,404/2,106.72 = 624.24/x
3. Step 3: Cross multiply
   1,404x = 2,106.72 × 624.24
4. Step 4: Simplify right side
   1,404x = 1,315,098.89
5. Step 5: Solve for x
   x = 1,315,098.89/1,404
6. Step 6: Final answer
   x = 936.68