Finding the Fourth Proportional to 3,071.58, 4,238.59 and 1,812.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.58 : 4,238.59 = 1,812.69 : x
2. Step 2: Convert to fraction form
   3,071.58/4,238.59 = 1,812.69/x
3. Step 3: Cross multiply
   3,071.58x = 4,238.59 × 1,812.69
4. Step 4: Simplify right side
   3,071.58x = 7,683,249.71
5. Step 5: Solve for x
   x = 7,683,249.71/3,071.58
6. Step 6: Final answer
   x = 2,501.40