Finding the Fourth Proportional to 1,098.69, 1,648.23 and 368.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.69 : 1,648.23 = 368.47 : x
2. Step 2: Convert to fraction form
   1,098.69/1,648.23 = 368.47/x
3. Step 3: Cross multiply
   1,098.69x = 1,648.23 × 368.47
4. Step 4: Simplify right side
   1,098.69x = 607,323.31
5. Step 5: Solve for x
   x = 607,323.31/1,098.69
6. Step 6: Final answer
   x = 552.77