Finding the Fourth Proportional to 1,858.56, 2,564.29 and 1,327.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.56 : 2,564.29 = 1,327.60 : x
2. Step 2: Convert to fraction form
   1,858.56/2,564.29 = 1,327.60/x
3. Step 3: Cross multiply
   1,858.56x = 2,564.29 × 1,327.60
4. Step 4: Simplify right side
   1,858.56x = 3,404,356.27
5. Step 5: Solve for x
   x = 3,404,356.27/1,858.56
6. Step 6: Final answer
   x = 1,831.72