Finding the Fourth Proportional to 1,167.77, 1,610.18 and 872.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.77 : 1,610.18 = 872.54 : x
2. Step 2: Convert to fraction form
   1,167.77/1,610.18 = 872.54/x
3. Step 3: Cross multiply
   1,167.77x = 1,610.18 × 872.54
4. Step 4: Simplify right side
   1,167.77x = 1,404,934.04
5. Step 5: Solve for x
   x = 1,404,934.04/1,167.77
6. Step 6: Final answer
   x = 1,203.10