Finding the Fourth Proportional to 3,789.81, 5,686.29 and 1,814.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.81 : 5,686.29 = 1,814.45 : x
2. Step 2: Convert to fraction form
   3,789.81/5,686.29 = 1,814.45/x
3. Step 3: Cross multiply
   3,789.81x = 5,686.29 × 1,814.45
4. Step 4: Simplify right side
   3,789.81x = 10,317,460.46
5. Step 5: Solve for x
   x = 10,317,460.46/3,789.81
6. Step 6: Final answer
   x = 2,722.42