Finding the Fourth Proportional to 1,100.29, 1,650.59 and 406.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.29 : 1,650.59 = 406.87 : x
2. Step 2: Convert to fraction form
   1,100.29/1,650.59 = 406.87/x
3. Step 3: Cross multiply
   1,100.29x = 1,650.59 × 406.87
4. Step 4: Simplify right side
   1,100.29x = 671,573.52
5. Step 5: Solve for x
   x = 671,573.52/1,100.29
6. Step 6: Final answer
   x = 610.36