Finding the Fourth Proportional to 1,853.94, 2,556.72 and 1,191.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,853.94 : 2,556.72 = 1,191.36 : x
2. Step 2: Convert to fraction form
   1,853.94/2,556.72 = 1,191.36/x
3. Step 3: Cross multiply
   1,853.94x = 2,556.72 × 1,191.36
4. Step 4: Simplify right side
   1,853.94x = 3,045,973.94
5. Step 5: Solve for x
   x = 3,045,973.94/1,853.94
6. Step 6: Final answer
   x = 1,642.97