Finding the Fourth Proportional to 1,680.66, 2,522.27 and 756.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.66 : 2,522.27 = 756.86 : x
2. Step 2: Convert to fraction form
   1,680.66/2,522.27 = 756.86/x
3. Step 3: Cross multiply
   1,680.66x = 2,522.27 × 756.86
4. Step 4: Simplify right side
   1,680.66x = 1,908,994.55
5. Step 5: Solve for x
   x = 1,908,994.55/1,680.66
6. Step 6: Final answer
   x = 1,135.86