Finding the Fourth Proportional to 1,908.71, 2,861.57 and 1,284.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.71 : 2,861.57 = 1,284.69 : x
2. Step 2: Convert to fraction form
   1,908.71/2,861.57 = 1,284.69/x
3. Step 3: Cross multiply
   1,908.71x = 2,861.57 × 1,284.69
4. Step 4: Simplify right side
   1,908.71x = 3,676,235.27
5. Step 5: Solve for x
   x = 3,676,235.27/1,908.71
6. Step 6: Final answer
   x = 1,926.03