Finding the Fourth Proportional to 1,070.50, 1,476.83 and 622.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.50 : 1,476.83 = 622.34 : x
2. Step 2: Convert to fraction form
   1,070.50/1,476.83 = 622.34/x
3. Step 3: Cross multiply
   1,070.50x = 1,476.83 × 622.34
4. Step 4: Simplify right side
   1,070.50x = 919,090.38
5. Step 5: Solve for x
   x = 919,090.38/1,070.50
6. Step 6: Final answer
   x = 858.56