Finding the Fourth Proportional to 1,680.29, 2,522.05 and 756.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.29 : 2,522.05 = 756.89 : x
2. Step 2: Convert to fraction form
   1,680.29/2,522.05 = 756.89/x
3. Step 3: Cross multiply
   1,680.29x = 2,522.05 × 756.89
4. Step 4: Simplify right side
   1,680.29x = 1,908,899.92
5. Step 5: Solve for x
   x = 1,908,899.92/1,680.29
6. Step 6: Final answer
   x = 1,136.06