Finding the Fourth Proportional to 2,111.98, 3,168.14 and 652.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.98 : 3,168.14 = 652.16 : x
2. Step 2: Convert to fraction form
   2,111.98/3,168.14 = 652.16/x
3. Step 3: Cross multiply
   2,111.98x = 3,168.14 × 652.16
4. Step 4: Simplify right side
   2,111.98x = 2,066,134.18
5. Step 5: Solve for x
   x = 2,066,134.18/2,111.98
6. Step 6: Final answer
   x = 978.29