Finding the Fourth Proportional to 1,622.16, 2,434.15 and 756.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.16 : 2,434.15 = 756.47 : x
2. Step 2: Convert to fraction form
   1,622.16/2,434.15 = 756.47/x
3. Step 3: Cross multiply
   1,622.16x = 2,434.15 × 756.47
4. Step 4: Simplify right side
   1,622.16x = 1,841,361.45
5. Step 5: Solve for x
   x = 1,841,361.45/1,622.16
6. Step 6: Final answer
   x = 1,135.13