Finding the Fourth Proportional to 2,085.40, 3,127.12 and 624.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.40 : 3,127.12 = 624.04 : x
2. Step 2: Convert to fraction form
   2,085.40/3,127.12 = 624.04/x
3. Step 3: Cross multiply
   2,085.40x = 3,127.12 × 624.04
4. Step 4: Simplify right side
   2,085.40x = 1,951,447.96
5. Step 5: Solve for x
   x = 1,951,447.96/2,085.40
6. Step 6: Final answer
   x = 935.77