Finding the Fourth Proportional to 1,664.42, 2,498.17 and 843.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.42 : 2,498.17 = 843.27 : x
2. Step 2: Convert to fraction form
   1,664.42/2,498.17 = 843.27/x
3. Step 3: Cross multiply
   1,664.42x = 2,498.17 × 843.27
4. Step 4: Simplify right side
   1,664.42x = 2,106,631.82
5. Step 5: Solve for x
   x = 2,106,631.82/1,664.42
6. Step 6: Final answer
   x = 1,265.69