Finding the Fourth Proportional to 1,404.72, 2,107.58 and 624.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.72 : 2,107.58 = 624.80 : x
2. Step 2: Convert to fraction form
   1,404.72/2,107.58 = 624.80/x
3. Step 3: Cross multiply
   1,404.72x = 2,107.58 × 624.80
4. Step 4: Simplify right side
   1,404.72x = 1,316,802.32
5. Step 5: Solve for x
   x = 1,316,802.32/1,404.72
6. Step 6: Final answer
   x = 937.41