Finding the Fourth Proportional to 1,665.16, 2,498.65 and 843.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.16 : 2,498.65 = 843.62 : x
2. Step 2: Convert to fraction form
   1,665.16/2,498.65 = 843.62/x
3. Step 3: Cross multiply
   1,665.16x = 2,498.65 × 843.62
4. Step 4: Simplify right side
   1,665.16x = 2,107,896.51
5. Step 5: Solve for x
   x = 2,107,896.51/1,665.16
6. Step 6: Final answer
   x = 1,265.88