Finding the Fourth Proportional to 3,429.84, 5,141.71 and 1,238.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.84 : 5,141.71 = 1,238.09 : x
2. Step 2: Convert to fraction form
   3,429.84/5,141.71 = 1,238.09/x
3. Step 3: Cross multiply
   3,429.84x = 5,141.71 × 1,238.09
4. Step 4: Simplify right side
   3,429.84x = 6,365,875.57
5. Step 5: Solve for x
   x = 6,365,875.57/3,429.84
6. Step 6: Final answer
   x = 1,856.02