Finding the Fourth Proportional to 1,168.07, 1,610.72 and 902.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.07 : 1,610.72 = 902.56 : x
2. Step 2: Convert to fraction form
   1,168.07/1,610.72 = 902.56/x
3. Step 3: Cross multiply
   1,168.07x = 1,610.72 × 902.56
4. Step 4: Simplify right side
   1,168.07x = 1,453,771.44
5. Step 5: Solve for x
   x = 1,453,771.44/1,168.07
6. Step 6: Final answer
   x = 1,244.59