Finding the Fourth Proportional to 1,564.74, 2,147.83 and 1,383.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.74 : 2,147.83 = 1,383.73 : x
2. Step 2: Convert to fraction form
   1,564.74/2,147.83 = 1,383.73/x
3. Step 3: Cross multiply
   1,564.74x = 2,147.83 × 1,383.73
4. Step 4: Simplify right side
   1,564.74x = 2,972,016.81
5. Step 5: Solve for x
   x = 2,972,016.81/1,564.74
6. Step 6: Final answer
   x = 1,899.37