Finding the Fourth Proportional to 1,908.79, 2,861.56 and 1,853.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,908.79 : 2,861.56 = 1,853.71 : x
2. Step 2: Convert to fraction form
   1,908.79/2,861.56 = 1,853.71/x
3. Step 3: Cross multiply
   1,908.79x = 2,861.56 × 1,853.71
4. Step 4: Simplify right side
   1,908.79x = 5,304,502.39
5. Step 5: Solve for x
   x = 5,304,502.39/1,908.79
6. Step 6: Final answer
   x = 2,778.99