Finding the Fourth Proportional to 2,003.68, 3,005.72 and 616.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.68 : 3,005.72 = 616.96 : x
2. Step 2: Convert to fraction form
   2,003.68/3,005.72 = 616.96/x
3. Step 3: Cross multiply
   2,003.68x = 3,005.72 × 616.96
4. Step 4: Simplify right side
   2,003.68x = 1,854,409.01
5. Step 5: Solve for x
   x = 1,854,409.01/2,003.68
6. Step 6: Final answer
   x = 925.50