Finding the Fourth Proportional to 2,085.25, 3,127.98 and 624.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.25 : 3,127.98 = 624.42 : x
2. Step 2: Convert to fraction form
   2,085.25/3,127.98 = 624.42/x
3. Step 3: Cross multiply
   2,085.25x = 3,127.98 × 624.42
4. Step 4: Simplify right side
   2,085.25x = 1,953,157.63
5. Step 5: Solve for x
   x = 1,953,157.63/2,085.25
6. Step 6: Final answer
   x = 936.65