Finding the Fourth Proportional to 2,085.82, 3,127.65 and 624.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.82 : 3,127.65 = 624.76 : x
2. Step 2: Convert to fraction form
   2,085.82/3,127.65 = 624.76/x
3. Step 3: Cross multiply
   2,085.82x = 3,127.65 × 624.76
4. Step 4: Simplify right side
   2,085.82x = 1,954,030.61
5. Step 5: Solve for x
   x = 1,954,030.61/2,085.82
6. Step 6: Final answer
   x = 936.82