Finding the Fourth Proportional to 2,103.71, 2,901.47 and 1,357.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.71 : 2,901.47 = 1,357.74 : x
2. Step 2: Convert to fraction form
   2,103.71/2,901.47 = 1,357.74/x
3. Step 3: Cross multiply
   2,103.71x = 2,901.47 × 1,357.74
4. Step 4: Simplify right side
   2,103.71x = 3,939,435.09
5. Step 5: Solve for x
   x = 3,939,435.09/2,103.71
6. Step 6: Final answer
   x = 1,872.62