Finding the Fourth Proportional to 1,100.01, 1,648.98 and 406.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.01 : 1,648.98 = 406.29 : x
2. Step 2: Convert to fraction form
   1,100.01/1,648.98 = 406.29/x
3. Step 3: Cross multiply
   1,100.01x = 1,648.98 × 406.29
4. Step 4: Simplify right side
   1,100.01x = 669,964.08
5. Step 5: Solve for x
   x = 669,964.08/1,100.01
6. Step 6: Final answer
   x = 609.05