Finding the Fourth Proportional to 1,372.10, 2,055.06 and 908.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.10 : 2,055.06 = 908.71 : x
2. Step 2: Convert to fraction form
   1,372.10/2,055.06 = 908.71/x
3. Step 3: Cross multiply
   1,372.10x = 2,055.06 × 908.71
4. Step 4: Simplify right side
   1,372.10x = 1,867,448.43
5. Step 5: Solve for x
   x = 1,867,448.43/1,372.10
6. Step 6: Final answer
   x = 1,361.02