Finding the Fourth Proportional to 1,663.86, 2,495.89 and 624.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.86 : 2,495.89 = 624.14 : x
2. Step 2: Convert to fraction form
   1,663.86/2,495.89 = 624.14/x
3. Step 3: Cross multiply
   1,663.86x = 2,495.89 × 624.14
4. Step 4: Simplify right side
   1,663.86x = 1,557,784.78
5. Step 5: Solve for x
   x = 1,557,784.78/1,663.86
6. Step 6: Final answer
   x = 936.25