Finding the Fourth Proportional to 1,897.36, 2,618.27 and 1,399.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.36 : 2,618.27 = 1,399.82 : x
2. Step 2: Convert to fraction form
   1,897.36/2,618.27 = 1,399.82/x
3. Step 3: Cross multiply
   1,897.36x = 2,618.27 × 1,399.82
4. Step 4: Simplify right side
   1,897.36x = 3,665,106.71
5. Step 5: Solve for x
   x = 3,665,106.71/1,897.36
6. Step 6: Final answer
   x = 1,931.69