Finding the Fourth Proportional to 1,404.23, 2,106.35 and 624.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.23 : 2,106.35 = 624.05 : x
2. Step 2: Convert to fraction form
   1,404.23/2,106.35 = 624.05/x
3. Step 3: Cross multiply
   1,404.23x = 2,106.35 × 624.05
4. Step 4: Simplify right side
   1,404.23x = 1,314,467.81
5. Step 5: Solve for x
   x = 1,314,467.81/1,404.23
6. Step 6: Final answer
   x = 936.08