Finding the Fourth Proportional to 1,068.12, 1,612.17 and 1,068.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.12 : 1,612.17 = 1,068.12 : x
2. Step 2: Convert to fraction form
   1,068.12/1,612.17 = 1,068.12/x
3. Step 3: Cross multiply
   1,068.12x = 1,612.17 × 1,068.12
4. Step 4: Simplify right side
   1,068.12x = 1,721,991.02
5. Step 5: Solve for x
   x = 1,721,991.02/1,068.12
6. Step 6: Final answer
   x = 1,612.17