Finding the Fourth Proportional to 1,852.72, 2,556.98 and 1,189.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.72 : 2,556.98 = 1,189.33 : x
2. Step 2: Convert to fraction form
   1,852.72/2,556.98 = 1,189.33/x
3. Step 3: Cross multiply
   1,852.72x = 2,556.98 × 1,189.33
4. Step 4: Simplify right side
   1,852.72x = 3,041,093.02
5. Step 5: Solve for x
   x = 3,041,093.02/1,852.72
6. Step 6: Final answer
   x = 1,641.42