Finding the Fourth Proportional to 1,099.34, 1,648.61 and 368.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.34 : 1,648.61 = 368.75 : x
2. Step 2: Convert to fraction form
   1,099.34/1,648.61 = 368.75/x
3. Step 3: Cross multiply
   1,099.34x = 1,648.61 × 368.75
4. Step 4: Simplify right side
   1,099.34x = 607,914.85
5. Step 5: Solve for x
   x = 607,914.85/1,099.34
6. Step 6: Final answer
   x = 552.98