Finding the Fourth Proportional to 1,155.34, 1,732.78 and 375.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.34 : 1,732.78 = 375.30 : x
2. Step 2: Convert to fraction form
   1,155.34/1,732.78 = 375.30/x
3. Step 3: Cross multiply
   1,155.34x = 1,732.78 × 375.30
4. Step 4: Simplify right side
   1,155.34x = 650,312.33
5. Step 5: Solve for x
   x = 650,312.33/1,155.34
6. Step 6: Final answer
   x = 562.88