Finding the Fourth Proportional to 1,940.09, 2,677.31 and 1,055.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.09 : 2,677.31 = 1,055.89 : x
2. Step 2: Convert to fraction form
   1,940.09/2,677.31 = 1,055.89/x
3. Step 3: Cross multiply
   1,940.09x = 2,677.31 × 1,055.89
4. Step 4: Simplify right side
   1,940.09x = 2,826,949.51
5. Step 5: Solve for x
   x = 2,826,949.51/1,940.09
6. Step 6: Final answer
   x = 1,457.12