Finding the Fourth Proportional to 1,111.22, 1,534.12 and 849.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.22 : 1,534.12 = 849.72 : x
2. Step 2: Convert to fraction form
   1,111.22/1,534.12 = 849.72/x
3. Step 3: Cross multiply
   1,111.22x = 1,534.12 × 849.72
4. Step 4: Simplify right side
   1,111.22x = 1,303,580.85
5. Step 5: Solve for x
   x = 1,303,580.85/1,111.22
6. Step 6: Final answer
   x = 1,173.11