Finding the Fourth Proportional to 1,665.04, 2,498.67 and 691.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.04 : 2,498.67 = 691.14 : x
2. Step 2: Convert to fraction form
   1,665.04/2,498.67 = 691.14/x
3. Step 3: Cross multiply
   1,665.04x = 2,498.67 × 691.14
4. Step 4: Simplify right side
   1,665.04x = 1,726,932.51
5. Step 5: Solve for x
   x = 1,726,932.51/1,665.04
6. Step 6: Final answer
   x = 1,037.17