Finding the Fourth Proportional to 1,346.89, 2,016.59 and 687.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.89 : 2,016.59 = 687.35 : x
2. Step 2: Convert to fraction form
   1,346.89/2,016.59 = 687.35/x
3. Step 3: Cross multiply
   1,346.89x = 2,016.59 × 687.35
4. Step 4: Simplify right side
   1,346.89x = 1,386,089.62
5. Step 5: Solve for x
   x = 1,386,089.62/1,346.89
6. Step 6: Final answer
   x = 1,029.11