Finding the Fourth Proportional to 1,746.48, 2,618.56 and 691.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,746.48 : 2,618.56 = 691.59 : x
2. Step 2: Convert to fraction form
   1,746.48/2,618.56 = 691.59/x
3. Step 3: Cross multiply
   1,746.48x = 2,618.56 × 691.59
4. Step 4: Simplify right side
   1,746.48x = 1,810,976.46
5. Step 5: Solve for x
   x = 1,810,976.46/1,746.48
6. Step 6: Final answer
   x = 1,036.93