Finding the Fourth Proportional to 3,380.50, 5,068.50 and 1,405.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.50 : 5,068.50 = 1,405.62 : x
2. Step 2: Convert to fraction form
   3,380.50/5,068.50 = 1,405.62/x
3. Step 3: Cross multiply
   3,380.50x = 5,068.50 × 1,405.62
4. Step 4: Simplify right side
   3,380.50x = 7,124,384.97
5. Step 5: Solve for x
   x = 7,124,384.97/3,380.50
6. Step 6: Final answer
   x = 2,107.49