Finding the Fourth Proportional to 2,068.32, 3,102.72 and 1,028.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.32 : 3,102.72 = 1,028.64 : x
2. Step 2: Convert to fraction form
   2,068.32/3,102.72 = 1,028.64/x
3. Step 3: Cross multiply
   2,068.32x = 3,102.72 × 1,028.64
4. Step 4: Simplify right side
   2,068.32x = 3,191,581.90
5. Step 5: Solve for x
   x = 3,191,581.90/2,068.32
6. Step 6: Final answer
   x = 1,543.08