Finding the Fourth Proportional to 1,092.06, 1,507.05 and 626.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.06 : 1,507.05 = 626.31 : x
2. Step 2: Convert to fraction form
   1,092.06/1,507.05 = 626.31/x
3. Step 3: Cross multiply
   1,092.06x = 1,507.05 × 626.31
4. Step 4: Simplify right side
   1,092.06x = 943,880.49
5. Step 5: Solve for x
   x = 943,880.49/1,092.06
6. Step 6: Final answer
   x = 864.31