Finding the Fourth Proportional to 1,100.08, 1,518.10 and 602.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.08 : 1,518.10 = 602.74 : x
2. Step 2: Convert to fraction form
   1,100.08/1,518.10 = 602.74/x
3. Step 3: Cross multiply
   1,100.08x = 1,518.10 × 602.74
4. Step 4: Simplify right side
   1,100.08x = 915,019.59
5. Step 5: Solve for x
   x = 915,019.59/1,100.08
6. Step 6: Final answer
   x = 831.78