Finding the Fourth Proportional to 2,875.98, 3,968.52 and 1,616.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.98 : 3,968.52 = 1,616.78 : x
2. Step 2: Convert to fraction form
   2,875.98/3,968.52 = 1,616.78/x
3. Step 3: Cross multiply
   2,875.98x = 3,968.52 × 1,616.78
4. Step 4: Simplify right side
   2,875.98x = 6,416,223.77
5. Step 5: Solve for x
   x = 6,416,223.77/2,875.98
6. Step 6: Final answer
   x = 2,230.97