Finding the Fourth Proportional to 2,792.71, 4,189.15 and 1,405.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,792.71 : 4,189.15 = 1,405.29 : x
2. Step 2: Convert to fraction form
   2,792.71/4,189.15 = 1,405.29/x
3. Step 3: Cross multiply
   2,792.71x = 4,189.15 × 1,405.29
4. Step 4: Simplify right side
   2,792.71x = 5,886,970.60
5. Step 5: Solve for x
   x = 5,886,970.60/2,792.71
6. Step 6: Final answer
   x = 2,107.98