Finding the Fourth Proportional to 1,100.74, 1,650.52 and 407.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.74 : 1,650.52 = 407.27 : x
2. Step 2: Convert to fraction form
   1,100.74/1,650.52 = 407.27/x
3. Step 3: Cross multiply
   1,100.74x = 1,650.52 × 407.27
4. Step 4: Simplify right side
   1,100.74x = 672,210.39
5. Step 5: Solve for x
   x = 672,210.39/1,100.74
6. Step 6: Final answer
   x = 610.69