Finding the Fourth Proportional to 2,778.32, 4,168.76 and 1,411.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.32 : 4,168.76 = 1,411.28 : x
2. Step 2: Convert to fraction form
   2,778.32/4,168.76 = 1,411.28/x
3. Step 3: Cross multiply
   2,778.32x = 4,168.76 × 1,411.28
4. Step 4: Simplify right side
   2,778.32x = 5,883,287.61
5. Step 5: Solve for x
   x = 5,883,287.61/2,778.32
6. Step 6: Final answer
   x = 2,117.57