Finding the Fourth Proportional to 1,186.02, 1,635.82 and 871.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.02 : 1,635.82 = 871.18 : x
2. Step 2: Convert to fraction form
   1,186.02/1,635.82 = 871.18/x
3. Step 3: Cross multiply
   1,186.02x = 1,635.82 × 871.18
4. Step 4: Simplify right side
   1,186.02x = 1,425,094.45
5. Step 5: Solve for x
   x = 1,425,094.45/1,186.02
6. Step 6: Final answer
   x = 1,201.58