Finding the Fourth Proportional to 1,174.71, 1,621.20 and 677.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.71 : 1,621.20 = 677.37 : x
2. Step 2: Convert to fraction form
   1,174.71/1,621.20 = 677.37/x
3. Step 3: Cross multiply
   1,174.71x = 1,621.20 × 677.37
4. Step 4: Simplify right side
   1,174.71x = 1,098,152.24
5. Step 5: Solve for x
   x = 1,098,152.24/1,174.71
6. Step 6: Final answer
   x = 934.83