Finding the Fourth Proportional to 1,372.71, 2,055.81 and 712.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.71 : 2,055.81 = 712.83 : x
2. Step 2: Convert to fraction form
   1,372.71/2,055.81 = 712.83/x
3. Step 3: Cross multiply
   1,372.71x = 2,055.81 × 712.83
4. Step 4: Simplify right side
   1,372.71x = 1,465,443.04
5. Step 5: Solve for x
   x = 1,465,443.04/1,372.71
6. Step 6: Final answer
   x = 1,067.55