Finding the Fourth Proportional to 1,094.72, 1,510.71 and 622.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.72 : 1,510.71 = 622.61 : x
2. Step 2: Convert to fraction form
   1,094.72/1,510.71 = 622.61/x
3. Step 3: Cross multiply
   1,094.72x = 1,510.71 × 622.61
4. Step 4: Simplify right side
   1,094.72x = 940,578.93
5. Step 5: Solve for x
   x = 940,578.93/1,094.72
6. Step 6: Final answer
   x = 859.20