Finding the Fourth Proportional to 3,814.47, 5,266.35 and 2,491.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,814.47 : 5,266.35 = 2,491.89 : x
2. Step 2: Convert to fraction form
   3,814.47/5,266.35 = 2,491.89/x
3. Step 3: Cross multiply
   3,814.47x = 5,266.35 × 2,491.89
4. Step 4: Simplify right side
   3,814.47x = 13,123,164.90
5. Step 5: Solve for x
   x = 13,123,164.90/3,814.47
6. Step 6: Final answer
   x = 3,440.36