Finding the Fourth Proportional to 2,068.93, 2,855.15 and 1,230.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.93 : 2,855.15 = 1,230.09 : x
2. Step 2: Convert to fraction form
   2,068.93/2,855.15 = 1,230.09/x
3. Step 3: Cross multiply
   2,068.93x = 2,855.15 × 1,230.09
4. Step 4: Simplify right side
   2,068.93x = 3,512,091.46
5. Step 5: Solve for x
   x = 3,512,091.46/2,068.93
6. Step 6: Final answer
   x = 1,697.54