Finding the Fourth Proportional to 1,100.21, 1,518.27 and 602.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.21 : 1,518.27 = 602.84 : x
2. Step 2: Convert to fraction form
   1,100.21/1,518.27 = 602.84/x
3. Step 3: Cross multiply
   1,100.21x = 1,518.27 × 602.84
4. Step 4: Simplify right side
   1,100.21x = 915,266.30
5. Step 5: Solve for x
   x = 915,266.30/1,100.21
6. Step 6: Final answer
   x = 831.91