Finding the Fourth Proportional to 1,726.59, 2,588.42 and 687.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,726.59 : 2,588.42 = 687.33 : x
2. Step 2: Convert to fraction form
   1,726.59/2,588.42 = 687.33/x
3. Step 3: Cross multiply
   1,726.59x = 2,588.42 × 687.33
4. Step 4: Simplify right side
   1,726.59x = 1,779,098.72
5. Step 5: Solve for x
   x = 1,779,098.72/1,726.59
6. Step 6: Final answer
   x = 1,030.41