Finding the Fourth Proportional to 2,335.53, 3,501.77 and 1,638.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.53 : 3,501.77 = 1,638.32 : x
2. Step 2: Convert to fraction form
   2,335.53/3,501.77 = 1,638.32/x
3. Step 3: Cross multiply
   2,335.53x = 3,501.77 × 1,638.32
4. Step 4: Simplify right side
   2,335.53x = 5,737,019.83
5. Step 5: Solve for x
   x = 5,737,019.83/2,335.53
6. Step 6: Final answer
   x = 2,456.41