Finding the Fourth Proportional to 1,851.86, 2,554.92 and 1,189.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.86 : 2,554.92 = 1,189.08 : x
2. Step 2: Convert to fraction form
   1,851.86/2,554.92 = 1,189.08/x
3. Step 3: Cross multiply
   1,851.86x = 2,554.92 × 1,189.08
4. Step 4: Simplify right side
   1,851.86x = 3,038,004.27
5. Step 5: Solve for x
   x = 3,038,004.27/1,851.86
6. Step 6: Final answer
   x = 1,640.52