Finding the Fourth Proportional to 2,085.76, 3,128.52 and 624.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.76 : 3,128.52 = 624.94 : x
2. Step 2: Convert to fraction form
   2,085.76/3,128.52 = 624.94/x
3. Step 3: Cross multiply
   2,085.76x = 3,128.52 × 624.94
4. Step 4: Simplify right side
   2,085.76x = 1,955,137.29
5. Step 5: Solve for x
   x = 1,955,137.29/2,085.76
6. Step 6: Final answer
   x = 937.37