Finding the Fourth Proportional to 1,853.15, 2,553.83 and 1,328.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,853.15 : 2,553.83 = 1,328.27 : x
2. Step 2: Convert to fraction form
   1,853.15/2,553.83 = 1,328.27/x
3. Step 3: Cross multiply
   1,853.15x = 2,553.83 × 1,328.27
4. Step 4: Simplify right side
   1,853.15x = 3,392,156.36
5. Step 5: Solve for x
   x = 3,392,156.36/1,853.15
6. Step 6: Final answer
   x = 1,830.49