Finding the Fourth Proportional to 1,109.52, 1,664.01 and 622.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.52 : 1,664.01 = 622.98 : x
2. Step 2: Convert to fraction form
   1,109.52/1,664.01 = 622.98/x
3. Step 3: Cross multiply
   1,109.52x = 1,664.01 × 622.98
4. Step 4: Simplify right side
   1,109.52x = 1,036,644.95
5. Step 5: Solve for x
   x = 1,036,644.95/1,109.52
6. Step 6: Final answer
   x = 934.32