Finding the Fourth Proportional to 2,068.61, 3,102.00 and 1,287.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.61 : 3,102.00 = 1,287.43 : x
2. Step 2: Convert to fraction form
   2,068.61/3,102.00 = 1,287.43/x
3. Step 3: Cross multiply
   2,068.61x = 3,102.00 × 1,287.43
4. Step 4: Simplify right side
   2,068.61x = 3,993,595.28
5. Step 5: Solve for x
   x = 3,993,595.28/2,068.61
6. Step 6: Final answer
   x = 1,930.57