Finding the Fourth Proportional to 1,897.08, 2,616.84 and 1,399.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.08 : 2,616.84 = 1,399.56 : x
2. Step 2: Convert to fraction form
   1,897.08/2,616.84 = 1,399.56/x
3. Step 3: Cross multiply
   1,897.08x = 2,616.84 × 1,399.56
4. Step 4: Simplify right side
   1,897.08x = 3,662,424.59
5. Step 5: Solve for x
   x = 3,662,424.59/1,897.08
6. Step 6: Final answer
   x = 1,930.56