Finding the Fourth Proportional to 1,996.16, 2,755.41 and 1,210.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.16 : 2,755.41 = 1,210.28 : x
2. Step 2: Convert to fraction form
   1,996.16/2,755.41 = 1,210.28/x
3. Step 3: Cross multiply
   1,996.16x = 2,755.41 × 1,210.28
4. Step 4: Simplify right side
   1,996.16x = 3,334,817.61
5. Step 5: Solve for x
   x = 3,334,817.61/1,996.16
6. Step 6: Final answer
   x = 1,670.62