Finding the Fourth Proportional to 2,355.72, 3,534.16 and 1,663.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.72 : 3,534.16 = 1,663.74 : x
2. Step 2: Convert to fraction form
   2,355.72/3,534.16 = 1,663.74/x
3. Step 3: Cross multiply
   2,355.72x = 3,534.16 × 1,663.74
4. Step 4: Simplify right side
   2,355.72x = 5,879,915.04
5. Step 5: Solve for x
   x = 5,879,915.04/2,355.72
6. Step 6: Final answer
   x = 2,496.01