Finding the Fourth Proportional to 1,094.78, 1,510.97 and 622.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.78 : 1,510.97 = 622.89 : x
2. Step 2: Convert to fraction form
   1,094.78/1,510.97 = 622.89/x
3. Step 3: Cross multiply
   1,094.78x = 1,510.97 × 622.89
4. Step 4: Simplify right side
   1,094.78x = 941,168.10
5. Step 5: Solve for x
   x = 941,168.10/1,094.78
6. Step 6: Final answer
   x = 859.69