Finding the Fourth Proportional to 1,100.12, 1,518.06 and 602.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.12 : 1,518.06 = 602.72 : x
2. Step 2: Convert to fraction form
   1,100.12/1,518.06 = 602.72/x
3. Step 3: Cross multiply
   1,100.12x = 1,518.06 × 602.72
4. Step 4: Simplify right side
   1,100.12x = 914,965.12
5. Step 5: Solve for x
   x = 914,965.12/1,100.12
6. Step 6: Final answer
   x = 831.70