Finding the Fourth Proportional to 2,796.72, 4,192.26 and 1,405.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,796.72 : 4,192.26 = 1,405.86 : x
2. Step 2: Convert to fraction form
   2,796.72/4,192.26 = 1,405.86/x
3. Step 3: Cross multiply
   2,796.72x = 4,192.26 × 1,405.86
4. Step 4: Simplify right side
   2,796.72x = 5,893,730.64
5. Step 5: Solve for x
   x = 5,893,730.64/2,796.72
6. Step 6: Final answer
   x = 2,107.37