Finding the Fourth Proportional to 1,891.47, 2,837.18 and 1,371.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.47 : 2,837.18 = 1,371.72 : x
2. Step 2: Convert to fraction form
   1,891.47/2,837.18 = 1,371.72/x
3. Step 3: Cross multiply
   1,891.47x = 2,837.18 × 1,371.72
4. Step 4: Simplify right side
   1,891.47x = 3,891,816.55
5. Step 5: Solve for x
   x = 3,891,816.55/1,891.47
6. Step 6: Final answer
   x = 2,057.56