Finding the Fourth Proportional to 2,085.04, 3,128.17 and 624.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.04 : 3,128.17 = 624.23 : x
2. Step 2: Convert to fraction form
   2,085.04/3,128.17 = 624.23/x
3. Step 3: Cross multiply
   2,085.04x = 3,128.17 × 624.23
4. Step 4: Simplify right side
   2,085.04x = 1,952,697.56
5. Step 5: Solve for x
   x = 1,952,697.56/2,085.04
6. Step 6: Final answer
   x = 936.53