Finding the Fourth Proportional to 1,174.42, 1,621.05 and 677.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.42 : 1,621.05 = 677.38 : x
2. Step 2: Convert to fraction form
   1,174.42/1,621.05 = 677.38/x
3. Step 3: Cross multiply
   1,174.42x = 1,621.05 × 677.38
4. Step 4: Simplify right side
   1,174.42x = 1,098,063.30
5. Step 5: Solve for x
   x = 1,098,063.30/1,174.42
6. Step 6: Final answer
   x = 934.99