Finding the Fourth Proportional to 1,174.80, 1,621.34 and 650.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.80 : 1,621.34 = 650.83 : x
2. Step 2: Convert to fraction form
   1,174.80/1,621.34 = 650.83/x
3. Step 3: Cross multiply
   1,174.80x = 1,621.34 × 650.83
4. Step 4: Simplify right side
   1,174.80x = 1,055,216.71
5. Step 5: Solve for x
   x = 1,055,216.71/1,174.80
6. Step 6: Final answer
   x = 898.21