Finding the Fourth Proportional to 2,628.60, 3,942.82 and 1,068.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.60 : 3,942.82 = 1,068.15 : x
2. Step 2: Convert to fraction form
   2,628.60/3,942.82 = 1,068.15/x
3. Step 3: Cross multiply
   2,628.60x = 3,942.82 × 1,068.15
4. Step 4: Simplify right side
   2,628.60x = 4,211,498.13
5. Step 5: Solve for x
   x = 4,211,498.13/2,628.60
6. Step 6: Final answer
   x = 1,602.18