Finding the Fourth Proportional to 2,796.07, 4,189.86 and 1,405.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,796.07 : 4,189.86 = 1,405.51 : x
2. Step 2: Convert to fraction form
   2,796.07/4,189.86 = 1,405.51/x
3. Step 3: Cross multiply
   2,796.07x = 4,189.86 × 1,405.51
4. Step 4: Simplify right side
   2,796.07x = 5,888,890.13
5. Step 5: Solve for x
   x = 5,888,890.13/2,796.07
6. Step 6: Final answer
   x = 2,106.13