Finding the Fourth Proportional to 1,219.82, 1,830.03 and 354.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219.82 : 1,830.03 = 354.14 : x
2. Step 2: Convert to fraction form
   1,219.82/1,830.03 = 354.14/x
3. Step 3: Cross multiply
   1,219.82x = 1,830.03 × 354.14
4. Step 4: Simplify right side
   1,219.82x = 648,086.82
5. Step 5: Solve for x
   x = 648,086.82/1,219.82
6. Step 6: Final answer
   x = 531.30