Finding the Fourth Proportional to 3,916.98, 5,405.33 and 2,238.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.98 : 5,405.33 = 2,238.26 : x
2. Step 2: Convert to fraction form
   3,916.98/5,405.33 = 2,238.26/x
3. Step 3: Cross multiply
   3,916.98x = 5,405.33 × 2,238.26
4. Step 4: Simplify right side
   3,916.98x = 12,098,495.71
5. Step 5: Solve for x
   x = 12,098,495.71/3,916.98
6. Step 6: Final answer
   x = 3,088.73