Finding the Fourth Proportional to 1,610.64, 2,222.52 and 1,191.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.64 : 2,222.52 = 1,191.24 : x
2. Step 2: Convert to fraction form
   1,610.64/2,222.52 = 1,191.24/x
3. Step 3: Cross multiply
   1,610.64x = 2,222.52 × 1,191.24
4. Step 4: Simplify right side
   1,610.64x = 2,647,554.72
5. Step 5: Solve for x
   x = 2,647,554.72/1,610.64
6. Step 6: Final answer
   x = 1,643.79