Finding the Fourth Proportional to 2,875.78, 3,968.22 and 1,616.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.78 : 3,968.22 = 1,616.69 : x
2. Step 2: Convert to fraction form
   2,875.78/3,968.22 = 1,616.69/x
3. Step 3: Cross multiply
   2,875.78x = 3,968.22 × 1,616.69
4. Step 4: Simplify right side
   2,875.78x = 6,415,381.59
5. Step 5: Solve for x
   x = 6,415,381.59/2,875.78
6. Step 6: Final answer
   x = 2,230.84