Finding the Fourth Proportional to 2,105.06, 2,900.41 and 1,405.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.06 : 2,900.41 = 1,405.22 : x
2. Step 2: Convert to fraction form
   2,105.06/2,900.41 = 1,405.22/x
3. Step 3: Cross multiply
   2,105.06x = 2,900.41 × 1,405.22
4. Step 4: Simplify right side
   2,105.06x = 4,075,696.13
5. Step 5: Solve for x
   x = 4,075,696.13/2,105.06
6. Step 6: Final answer
   x = 1,936.15