Finding the Fourth Proportional to 1,173.82, 1,627.30 and 1,111.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.82 : 1,627.30 = 1,111.40 : x
2. Step 2: Convert to fraction form
   1,173.82/1,627.30 = 1,111.40/x
3. Step 3: Cross multiply
   1,173.82x = 1,627.30 × 1,111.40
4. Step 4: Simplify right side
   1,173.82x = 1,808,581.22
5. Step 5: Solve for x
   x = 1,808,581.22/1,173.82
6. Step 6: Final answer
   x = 1,540.77